TeckNet Wireless Doorbell, Waterproof Twin Wall Plug-in Cordless Door Chime Kit With 300m Range, 52 Chimes, 4-Level Volume & Blue Light, No Batteries Required Best for Plug in Door Entry Bell
TECKNET
£16.99
TeckNet WA888 Wireless Doorbell:The WA888 Plug-in Wireless Door Bells and Push Button makes it easy to replace your home's generic doorbell ring with a chime tune that better fits your individual style. This chime is also compatible with a wide range of optional security accessories that can help you safeguard your home and family, and it comes complete with a pre-programmed bell push button. Plugs into Any Standard Wall Outlet:Easy to install and operate, it plugs into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind. 4 Volume LevelsYou'll be happy to know that you have the option of turning the chime down or up--a great option for different environment. 300m Operating Range:Thanks to its industry-leading 500-foot working range, you'll be sure never to miss a visitor's arrival no matter where you are.. Choice of 52 Chimes:This unit lets you choose the best way to be notified when someone is at your door. In addition to your choice of 52 selectable chime tunes Flashing Light Indicator:The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired). Dependable Operating Range: The WA888 has 64,000 available codes to prevent interference from other users,. TeckNet 18 Months Warranty:At TeckNet, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support
TeckNet Wireless Doorbell, Wall Plug-in Cordless Door Chime Kit With 300m Range, 52 Chimes, 4-Level Volume & Blue Light, No Batteries Required Best for Plug in Door Entry Bell
TECKNET
£10.99
TeckNet WA878 Wireless Doorbell:The WA878 Plug-in Wireless Door Chime and Push Button makes it easy to replace your home's generic doorbell ring with a chime tune that better fits your individual style. This chime is also compatible with a wide range of optional security accessories that can help you safeguard your home and family, and it comes complete with a pre-programmed bell push button. Plugs into Any Standard Wall Outlet:Easy to install and operate, it plugs into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind. 4 Volume LevelsYou'll be happy to know that you have the option of turning the chime down or up--a great option for different environment. 300m Operating Range:Thanks to its industry-leading 1000-foot working range, you'll be sure never to miss a visitor's arrival no matter where you are.. Choice of 52 Chimes:This unit lets you choose the best way to be notified when someone is at your door. In addition to your choice of 52 selectable chime tunes Flashing Light Indicator:The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired). Dependable Operating Range: The WA878 has 64,000 available codes to prevent interference from other users,. TeckNet 18 Months Warranty:At TeckNet, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support
Wireless Doorbell, OMERIL IP55 Waterproof Door Bell Chime Kit with 1000ft Range, 52 Chimes, 4-Level Volume & Blue Light, Plug in Doorbells Wireless Cordless for Home, Office -Batteries Included
OMERIL
£9.99
OMERIL Wireless Doorbell Kit OMERIL Plug-in Wireless Door Chime and Push Button better fits your individual style with multiple chime options, handy volume control and long working distance. This Door Chime kit helps you safeguard your home and family, and it can also be used as music alarm for your child and handy pager for the old in terms of timely care. It is a must-have accessory for home, office, store and etc. Choice of 52 Chimes Press Forward or Back Button to easily choose from 52 melodies and you will enjoy pleasant melodies whenever someone rings at your door Blue LED Flashing Lighting The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired). 4 Volume Levels 4 Volume adjustable Levels for you to choose--a great option for different environment. Up to 300M /1000 feet Operating Range This doorbell kit supports an industry-leading wireless working range of up to 500-1000 feet. No matter whether you are working on your computer or you are taking a shower,you will be promptly notified by the chimes and flashing blue light when someone is at your door. Simple Installation This doorbell kit includes all the tools you need to install your new doorbell in less than 10 minutes! Use it for front, side, or back doors to gain security and peace of mind.Kindly remind that please tear off the insulated film around the battery OMERIL 24 Months Warranty: All OMERIL products are backed by our 24 Months Product Warranty and we provide friendly, easy-to-reach support. Package Includes : 1 x Push Button (Transmitter) 1 x Plug-in Chime (Receiver) 1 x 12V A23 Alkaline battery for transmitter 2 x Screws 2 x Anchors 1 x Double-sided adhesive tape 1 x Small Screwdriver1 x User Manual
Wireless Doorbell, Waterproof Door Bell, Wall Plug-in Cordless Chime, 300m/1000ft Range, 36 Melodies to Choose, 4 Level Volume, White
CZJ
£10.99
Ausein Wireless Doorbell: The Ausein Plug-in Wireless Door Chime and Push Button makes it easy to replace your home's generic doorbell ring with a chime tune that better fits your individual style. This chime is compatible with a wide range of optional security accessories that can help you safeguard your home and family, and it comes complete with a pre-programmed bell push button. Plugs into Any Standard Wall Outlet: Easy to install and operate, just plug the receiver into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind. 4 Volume Levels You'll be happy to know that you have the option of turning the chime down or up--a great option for different environment. 300m Operating Range: Thanks to its industry-leading 1000-foot working range, you'll be sure never to miss a visitor's arrival no matter where you are. Choice of 36 Chimes: This unit lets you choose the best way to be notified when someone is at your door. In addition to your choice of 36 selectable chime tunes. Flashing Light Indicator: The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired). Dependable Operating Range: The bell has its unique codes to prevent interference from other users. Ausein 18 Months Warranty: We always stand behind our products and we will be more than happy to offer an 18-month warranty and provide friendly, easy-to-reach support.
Wireless Doorbell, NOVETE 1300-Ft Long Range Door Chime Kit,1 Push Button and 2 Plug-in Receivers with LED Flash, 52 Melodies IP 55 Waterproof Electric Doorbell with 5 Volume Levels
NOVETE
£21.99
Simple InstallationThe push button is easily attached to a wall or doorframe with the provided screws or adhesive patch. The receiver bell only needs to be connected to a power socket and does not need to be wired to the push button.Pleasant Melodies & Various Volume LevelsThe huge selection of 52 tunes guarantees you will be able to find something you like and suit your seasonal mood. The built-in 40 mm stereo speaker delivers clear and well-balanced sound up to 115 dB, meaning it is loud enough to be heard in other rooms and by those with impaired hearing. The receiver bell can be muted whenever quiet is needed, using the LED indicator to still show when you have a visitor.Long Operating DistanceThe doorbell supports an extensive 400m working range (depending on the operating environment), making it viable for most long-range setups in houses and gardens.Note: Metal will interfere with the signal and shorten the transmission range. Please place the transmitter in areas away from metals.WarrantyWe provide an 18-month warranty from the date of purchase and lifetime technical support. For technical support, feel free to contact us anytime and we will promptly resolve any issues.Package Contents1 x Transmitter (battery included)2 x Plug-in receivers1 x Adhesive patch2 x Screws2 x Anchors1 x Key1 x User Manual
Self-Powered Wireless Doorbell, Cordless Plug in Door Bells with 2 Receivers, IP44 Waterproof Door Chime Bell, 45 Ringtones, 0-110dB Loud 4 Levels Volume, 500-1000ft Range, No Battery Required
Yabife
£19.99
When using battery-operated doorbells, we have to check the battery every day. Consider the case when the battery gets discharged. And if you are not conscious of this fact, a visitor might press the bell button as much as he can, but you still won't hear the sound, as the doorbell is dead. Then visitors would leave your premise unattended with a guess that the house is empty. The result is quite troublesome and embarrassing. Now Yabife has put a micro power generator in the transmitter, when it is pressed, the mechanical energy will be converted into power and send the signal out, you don't have to worry about the mentioned embarrassment anymore. Besides, when pressed, the LED on the transmitter will light up, clearly reminding visitors that the signal has been successfully sent. Other features of Yabife E003 battery-free wireless doorbell: 🔔 45 ringtones to choose from 🔔 0-110dB volume, 4 levels adjustable (if set to 0dB, the led will flash if some visitor comes) 🔔 500-1000ft operation range in open space 🔔 IP44 waterproof 🔔 1-year 100% satisfaction warranty What's in the package: -- receiver * 2 -- transmitter * 1 -- screw * 2 -- double-sided adhesive tape *1 -- back plate * 1 -- user manual * 1 Tips: No matter what problem, please feel free to contact us. Here's how-to: 1, Log into your Amazon account; 2, Find your order; 3, On the right of the order, there's a yellow button "contact seller", click and send us a message. We'll definitely respond in 24 hours and perfectly resolve your problem.
TeckNet Wireless Doorbell, Wall Plug-in Cordless Door Chime at 820-feet Range with 32 Chimes
TECKNET
£8.99
TeckNet WA658 Wireless Doorbell:No batteries are needed for this plug-in door chime. The TeckNet WA658 door chime conveniently plugs into UK standard wall outlet for the simplest installation and operation. Plugs into Any Standard Wall Outlet:Easy to install and operate, it plugs into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind. 4 Volume LevelsYou'll be happy to know that you have the option of turning the chime down or up--a great option for different environment. 820 feet Operating Range:Thanks to its industry-leading 820-feet working range, you'll be sure never to miss a visitor's arrival no matter where you are.. Choice of 32 Chimes:This unit lets you choose the best way to be notified when someone is at your door. In addition to your choice of 32 selectable chime tunes Flashing Light Indicator:The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired). Dependable Operating Range: The WA658 has 64,000 available codes to prevent interference from other users,. TeckNet 18 Months Warranty:At TeckNet, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support
Wireless Doorbell, AVANTEK Mini IP55 Waterpoof Doorbell Chime Operating at 1000 Feet with 52 Melodies, 5 Volume Levels & LED Flash, CB-12
AVANTEK
£19.99
Mini Yet Mighty After carefully researching customer feedback, we have re-designed this receiver, giving it a mini size of just 2.8 x 3.1 inches, so that it won't block off any neighboring power sockets. The performance, however, has not been compromised. A huge selection of 52 melodies allows you to easily choose one that suits you. The Next and Previous buttons allow you to go back and forth when choosing a tune, meaning you do not have to cycle through the full list again if you accidentally skipped the one you wanted. Durable and Waterproof Transmitter The built-in 230 mAh CR2032 lithium battery has an ultra long three-year lifespan, saving you the annoyance of frequent purchases and replacements. The impressive IP55 dustproof and waterproof rating makes the transmitter tough enough to withstand various outdoor environments. And with a working temperature ranging from -4 °F to 140 °F, the transmitter can work for you in even the harshest weather conditions. Long Operating Distance The doorbell supports an extensive 1000 ft working range (depending on the operating environment). Rest assured that you'll never miss any important guests or urgent deliveries again with the help of this doorbell. Innovative Memory Function One of the great advantages of the AVANTEK Doorbell is its memory function. Every time you turn on the device after a power outage, it remembers your last-set melody and volume level. This makes it not only extremely convenient, but also very user-friendly. Note: Metal will interfere with the signal and shorten the transmission range. Please place the transmitter in areas away from metals.
No Battery Required Wireless Doorbell, 1 Push Button(Self-Generating Power) with 2 Wall Plug-in Receivers, IP55 Waterproof Door Bell, 58 Chimes Kit, White
esLife
£23.99
esLife Waterproof IP55 Wireless Doorbell Kit Will Offer You A Peace Of Mind--No Visitors Will Be Missed Again!Plugs into Any Standard Wall OutletEasy to install and operate, it plugs into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind.4 Volume LevelsYou'll be happy to know that you have the option of turning the chime down or up--a great option for different environment.Choice of 58 ChimesThere are 58 different musical chimes to choose from, and selecting the sound is so easy, you can pick a different one every day! With the esLife Wireless Doorbell, you're in full control of your doorbell's sound and volume.Operating RangeUp to 150 meters in the open air from the transmitter (50 meters if there are walls), you'll be sure never to miss a visitor's arrival.Box Contains2 x Plug in Receiver 1 x Push button - Transmitter (no battery required)1 x Double-sided Tape 2 x Screws 1 x Instruction Manual Note- Its IP55 waterproof rating makes it suitable for use indoors or outdoors. - Before mounting 2 Receivers and Transmitter into walls, please pair them according to the manual, and do some tests. - Then, plug the receivers in up to 150 meters away in the open air. The range will be influenced depending on operating circumstances. - Follow the setup instructions provided, and you'll be able to use your doorbell right away.Here at esLife, we stand by our products 100% with a 18-month warranty. A happy purchasing experience is our 1 priority.
Wireless Doorbell,IP55 Water Resistant Door Chime Kit with 1300ft Range Door Bell Knocker 7-Level Volume and 48 Chimes 1 Push Button and 2 Plug-in Receivers
YINXN
£16.99
Product description:YINXN wireless water resistant doorbell,multiple settings,easy to install,strong penetrating power.Your cozy life,Starts.  Product Function Settings:-There are 48 interesting tunes to choose from.You can change the different tunes when the mood is different.You will enjoy pleasant melodies whenever someone rings at your door.-7 adjustable volume levels(0dB-115 dB).It is a great option for different environment.For example,offices,factories, etc.Mute Mode,suitable for places such as baby rooms that do not require ringtones,or hearing-impaired people,only LED flashing on receiver.Highest volume,does not affect the doorbell during the party.-Strong penetrating power,including 1 push button and 2 plug-in receivers,wireless signal stabilization,capable of transmitting clear signals up to long range 396m/1300 feet inside in an open space.Digital circuit design effectively avoids interference with other electronic products.  Easy to install:-Two steps.Fix the remote transmitter on wall or door frame with the adhesive tapes or screws provided in the package,plug the receiver into any UK standard socket.  Specifications:Internal Sounds:48 chimesVolume:7 level adjustable levels (0db~1155db)Transmitter Standby Power:1W Water Resistant(Transmitter):IP55  Package Content:1 x Transmitter2 x Receiver2 x Screws1 x Screwdriver 2 x Anchors1 x Double-sided adhesive tape1 x User manual  Lifetime Warranty:Our 'YINXN' is committed to providing you with high quality products and good after-sales service. If you have any comments or suggestions on our products or services, please feel free to contact us.We will get back to you with a suitable solution within 24hs.  
Wireless Doorbell, AVANTEK Mini IP55 Waterpoof Doorbell Chime Operating at 1000 Feet with 52 Melodies, 5 Volume Levels, LED Flash, CB-11
AVANTEK
£13.99
Mini Yet Mighty After carefully researching customer feedback, we have re-designed this receiver, giving it a mini size of just 2.8 x 3.1 inches, so that it won't block off any neighboring power sockets. The performance, however, has not been compromised. A huge selection of 52 melodies allows you to easily choose one that suits you. The Next and Previous buttons allow you to go back and forth when choosing a tune, meaning you do not have to cycle through the full list again if you accidentally skipped the one you wanted. Durable and Waterproof Transmitter The built-in 230 mAh CR2032 lithium battery has an ultra long three-year lifespan, saving you the annoyance of frequent purchases and replacements. The impressive IP55 dustproof and waterproof rating makes the transmitter tough enough to withstand various outdoor environments. And with a working temperature ranging from -4 °F to 140 °F, the transmitter can work for you in even the harshest weather conditions. Long Operating Distance The doorbell supports an extensive 1000 ft working range (depending on the operating environment). Rest assured that you'll never miss any important guests or urgent deliveries again with the help of this doorbell. Innovative Memory Function One of the great advantages of the AVANTEK Doorbell is its memory function. Every time you turn on the device after a power outage, it remembers your last-set melody and volume level. This makes it not only extremely convenient, but also very user-friendly. Note: Metal will interfere with the signal and shorten the transmission range. Please place the transmitter in areas away from metals.
Byron 771 wired door chime - White - Classic sound
Byron
£8.47
Byron 771 Wired Door Chime in White BYR771 This hard-wired door chime has the following features:Wall mounted.Electro-mechanical (ding dong).Powered either via a separate transformer or via a 9V battery (NOT included). BYR771
Wireless Doorbell, OMERIL Loud Cordless Door Bell Plug-in with 5 Level Volume, 7-Color Indicator, 1000ft Wireless Range & IP55 Waterproof Doorbell Push Button (CR2032 Battery Included)
OMERIL
£10.99
Long Wireless Range300M/1000ft Long Working range enables you won't miss any important guests or urgent deliveries again, with the help of this doorbell.Durable & Waterproof TransmitterBuilt-in 230mAh CR2032 lithium battery has an ultra-long 3 years lifespan, saving you the annoyance of frequent purchases and replacements. IP55 Rated transmitter could works between -4 °F to 140 °F, withstands tough weather conditions.Auto Memory FunctionBoth the transmitter and receiver could auto memory, the receiver will auto play the selected song after you set. Kindly note that the doorbell kit will auto restore to default "Ding Dong" mode when power off or someone pull the receiver out.Various Melodies & VolumePlease press forward or back Button to easily choose from 32 melodies and you will enjoy pleasant melodies whenever someone rings at your door. 5 Levels of Adjustable Volume from 0-115 dB, including Mute Mode, which enables you set only LED flashing Mode.7 Color Gradual LED Flashing LightingThe flashing light indicator that gives you and your visitor a visual form of notification (an excellent feature for the hearing impaired).Easy to InstallSimply plug the receiver into a power outlet, and attach the transmitter to the exterior wall with the provided adhesive patch; Use it for front, side, or back doors to gain security and peace of mind.Warm Tips: 1. Tear off the insulated film around the battery before use. 2. Don't install this doorbell close to metal things, like iron, Aluminum alloy, etc.Package Includes: 1 x Push Button (Transmitter)1 x Plug-in Chimes (Receiver) 1 x 3V CR2032 Lithium Batteries (Built In Transmitter) 1 x Double-sided adhesive tapes2 x Screws2 x Anchors1 x Small Screwdriver1 x User Manual
Coolqiya Wireless Doorbell Chimes with 2 Remote Waterproof Door Bell Buttons and 3 Plugin Receivers, Operating up to 1000 Feet Range, No Battery Required for Receiver, White
fuyingxing
£31.99
You can pair transmitters with receivers one by one for a new code to get a ring tone or expand transmitter buttons/receivers.- Please pair transmitters with receivers one by one for a new code before you install the transmitters on the door frame. - If you have installed your transmitters on the door frame, please use the small screwdriver (included) to open the transmitter and take the front cover off, and take it close to the receiver to pair them.(Note: They can maintain their settings when power is removed, no need to reset).Here's how to pair them 1. Plug one receiver into a regular socket, and pick the sound you want on this receiver. 2. Press and hold the volume button on this receiver for 5 seconds or so, then the receiver will blink with a "ding" sound. And then push the transmitter button at the same time (within 5seconds) to pair with the receiver. Finally, you will hear the music you set. 3. The same way to pair other transmitter buttons with receivers.What's Included 3 * Receivers; 2 * Transmitter; 2 * 23A 12V Alkaline Batteries 4 * Screws & Anchors; 1 * Mini Screw Driver 2 * Sticky Pads; 1 * User Manual
Door Bell, OMERIL Loud Wireless Doorbell Plug In with 5 Level Volume (Mute Mode), 300M Range, Colorful LED Flash & 32 Tunes, IP55 Waterproof Doorbell Cordless Battery Operated with 2 Receiver
OMERIL
£14.98
Long Wireless Range 300M/1000ft Long Working range enables you won't miss any important guests or urgent deliveries again, with the help of this door bell wireless plug in 2 receivers. Durable & Waterproof Transmitter Built-in 230mAh CR2032 lithium battery has an ultra long 3 years lifespan, saving you the annoyance of frequent purchases and replacements. IP55 Rated transmitter could works between -4 °F to 140 °F, withstands tough weather conditions. Auto Memory Function Both the transmitter and receiver could auto memory, the receiver will auto play the selected song after you set. Kindly note that the doorbell kit will auto restore to default " Ding Dong" mode when power off or someone pull the receiver out. Various Melodies & Volume Please press forward or back Button to easily choose from 32 melodies and you will enjoy pleasant melodies whenever someone rings at your door. 5 Levels of Adjustable Volume from 0-115 dB, including Mute Mode, which enables you set only LED flashing Mode. 7 Color Gradual LED Flashing Lighting The flashing light indicator on push button gives you and your visitor a visual form of notification(an excellent feature for the hearing impaired). Easy to Install Simply plug the receiver into a power outlet, and attach the transmitter to the exterior wall with the provided adhesive patch; Use it for front, side, or back doors to gain security and peace of mind. Warm Tips: 1.Tear off the insulated film around the battery before use. 2.Don't install this doorbell close to metal things, like iron, Aluminum alloy, etc. Package Includes: 1 x Push Button/Transmitter (3V CR2032 Lithium Battery Built In) ) 2 x Plug-in Chimes (Receivers) 1 x Double-sided adhesive tapes 2 x Screws 2 x Anchors 1 x Small Screwdriver 1 x User Manual
TeckNet Wireless Doorbell, Twin Waterproof Wall Plug-in Cordless Door Chime Kit With 820-feet Range, 32 Chimes, 4-Level Volume & Blue Light, No Batteries Required Best for Plug in Door Entry Bell
TeckNet
£13.99
TeckNet WA659 Dual Wireless Doorbell:The WA659 Plug-in Wireless Door Chime and Push Button makes it easy to replace your home's generic doorbell ring with a chime tune that better fits your individual style. Plugs into Any Standard Wall Outlet:Easy to install and operate, it plugs into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind. 4 Volume LevelsYou'll be happy to know that you have the option of turning the chime down or up--a great option for different environment. 820f Operating Range:Thanks to its industry-leading 820-foot working range, you'll be sure never to miss a visitor's arrival no matter where you are.. Choice of 32 Chimes:This unit lets you choose the best way to be notified when someone is at your door. In addition to your choice of 32 selectable chime tunes Flashing Light Indicator:The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired). Dependable Operating Range: The WA659 has 64,000 available codes to prevent interference from other users,. TeckNet 18 Months Warranty:At TeckNet, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support
Ring Chime - Wi-Fi enabled indoor chime for video doorbell, white
Ring
£29.00
Connect Chime to all of your Ring devices, and get Ring notifications anywhere in your home.Instant Alerts Anywhere in Your HomeChime plugs into any standard power outlet and connects to all your Ring devices, allowing you to get notifications in any room of your home, even if you're not near your phone. Multiple alert tones Volume control Do Not Disturb modeA Custom Tone for Every HomeFrom seasonal sounds to popular classics, Chime has a tone that works for you, and we're constantly adding more.
Byron B304 Wireless doorbell kit – 50 m range – Battery powered
Byron
£10.00
Byron B304 Wirefree Portable Chime Kit 50m BYRB304 This Byron B304 Wirefree Portable Door Chime kit has a 50 metre operating distance. It provides a choice of two melodies and has volume control. It features self learning codes- will keep the code even when the batteries run out and are replaced. This portable door chime can have up to 2 bell pushes controlling the chime. It has a 80-85dB rating, depending on the sound. Compatible with all Byron B ranges.The chime requires 3 x AA batteries (not included)ThePush requires 1 x 23A battery (included).The BYRB304 Wirefree Portable Door Chime Kit has the following specifications:Colour: WhiteWeight: 153g BYRB304
SAIMPU Self-generating Power Wireless Doorbell with Night Lights, Smart Door Bell IP55 Waterproof No Battery Required, Door Chime Kit 1 Push Button and 2 Wall Plug-in Receivers
SAIMPU
£22.99
This is an advanced wireless doorbell that developed by SAIMPU after 10 years of research, Having adopted high-quality materials and intelligent chip management technology, and having done tens of thousands of product tests, only for you to be able to use bester 🔔Double Antennas Design:The antenna of the door bell receiver adopts copper core and insulating plastics to prevent short circuit, the antenna of the doorbell transmitter with electroplated coating protection and waterproofing protection, the signal is strong, which can stride across the multi-story building with the sensitive and non-interfering signal 🔔Intelligent Chip Management Technology:1.)The smart doorbell has a memory function, it will automatically save the bell set last time and the matched doorbell when the power is off, which can avoid the trouble of resetting2.)Intelligent code, the doorbell can achieve a variety of pairing combinations, and you can increase transmitters or receivers according to your need. 🔔Long Service Life:1.)The self powered wireless doorbell shell is made of native recycled ABS eco-friendly plastic, which has good heat resistant and corrosion resistant performance, long-lasting and non-yellowing2.)The wireless doorbell transmitter has been tested by pressing for 200,000 times, according to the average household press 30 times a day to calculate, the SAIMPU smart door bell can be used for 20 years without maintenance 🔔Easy To Install, Plug And Play:1.)There are 4 volume levels in the door bell, Built-in 32 music, you can set different ringtones according to your preferences2.)The doorbell has been matched to the code before leaving the factory, you can use it directly. No wiring is required, it works very well whether it is used at home or installed in office buildings, hotels, dormitories, factories, construction sites