Best Back Door Alert

wsdcam Wireless Door Alarm Window and Door Open Alarm Magnetic Sensor Pool Door Alarms for Kids Safety Home Security, 110 dB Loud - Door Alarm with 2 Remotes

Door alarm is triggered by magnetic sensor, suitable for windows and doors when opening, the alarm host makes an audible alert once the alarm host and magnet part was separated.
Wireless door alarm with 110 dB loud alarm sound can help to deter the intruder, wake or alert you if at home and possibly alert neighbors, also can use it as door open chime or pool alarm, helps notify you if visitors/children/dementia patients/pets or others are coming/going, and emergency alert system for the older/patients.
Door alarms with remote, wireless control range up to 49ft. Arm/Disarm/Panic/Doorbell 4 modes controlled by the remote. Great for home, business, apartment, hotel rooms, garage, RV, traveling, pool safety, dementia patients and kids safety.
2 Remotes control the alarm at the same time. DIY pairing as necessary. More alarms and remotes available for pairing.
Simple peel and stick installation. Battery can last longer, the window door alarm kit with low consumption.

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YisTech Caregiver Pager Door Alarms for Dementia Patients/Kids Safety/Home Security,Door Sensor Alarm for Elderly/Business/Home/Store/Mailbox

Keep your home/office safety:wireless door sensor chime offers a generous detection area of nearly 260 feet. You could hear doorbell chime as visitors or guests arrive to your home, store, office etc. It sounds to notify you someone enter into, or alert you intruder trying to entry your home. Or remind you when your children/Elderly Dementia Patients open the door/window and sneak around..
Multiple melodies&Loud chime-The receiver Unit has 58 ringtones for your choice. 5 adjustable volume levels from 0 dB to 110 dB..
Provide peace of mind for the hearing impaired: With the built-in LED indicator, the wireless door alert receiver and sensor offer additional assistance when coupled with the receiver to the hearing impaired. Difficulty hearing is no problem with this wireless system..
Easy installation: Plug and Play, Plug the Receiver into an standard Outlet, tear the double-side adhesive tape of the Door / Window sensor and stick them to any door or window..
Customize and Expandable. Each receiver can work with 50 door window magnetic sensors, each transmitter can pair with 20pc....

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Wireless Doorbell, ERA-UTDCR Door Chime with 4000 Feet Range, Ideal Wireless Door Chime for Business & Home, Long Range Wireless Doorbell Goes Through Multiple Walls & Floors, Concrete, Metal & Brick

A DOOR CHIME FOR BUSINESS WHEN ENTERING THAT YOU CAN HEAR IN THE LARGEST & NOSIEST LOCATIONS: 120db siren connects to 95db plug in receiver adjustable volume gives you control. Makes a great warehouse doorbell or door alert for business. Provides coverage in large areas & noisy locations you never thought possible - most applications can be covered with just one entry alert chime.
A POWERFUL LONG RANGE WIRELESS DOORBELL SIGNAL THAT CAN GO THROUGH VIRTUALLY EVERYTHING: Field tested at up to 4000ft range capability with unparalleled signal prowess that can transmit through metal, reinforced concrete, stone, brick, wood - even multiple floors, unattached structures & buildings.
PROVIDES COMPLETE COVERAGE IN THE MOST DEMANDING APPLICATIONS: This wireless door chime for business provides is expandable & easily configurable to add an unlimited number of transmitters & receivers. Receivers have (4) 12VDC outputs (1 per each of the 4 zones} allowing you to add 12VDC devices (sirens, buzzers, bells, strobes, etc). Transmitters feature (1) N/O, N/C relay & plug in receiver has (1) C relay.
MAGNETIC DOOR CHIME & PUSH BUTTON DOOR ENTRY ALERT WATERPROOF TRANSMITTER: Operates just like a standard wireless doorbell for business - when someone presses the button, the c....

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Door Alarm with Delay Sanjie Door Alarms with Chime 130 Db Adjustable Volume for Freezer/Refrigerator/Home/Business 5-In-1 Mode Time Delays Door Open Alert 3 Pack White

Door Left Open Alarm With Delay: When the door opened for 15 seconds, it will start alert and last for 30 seconds,they can be a good reminder for your....
130db Alarm Loud Enough: Door left open alert deterring thieves effectively by 110dB loud alarm, also prevent toddlder /pets going out the house from....
Open door chime with 5 modes -- Not only on/off setting, but also General Alarm, Constant Alarm, Closing-door Alert and Doorbell Mode. You can easily....
Low Battery Reminder : Size door chime alarm: 2.2" x 1.3" x 0.67", Magnetic sensor size: 1.37" x 0.42" x 0.39". When the battery is low, will soud Di....
Simple peel and stick installation: package Includes everything you need when install. Came with LR44 batteries and adhesive tape. Please contact us....

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EverNary Wireless Caregiver Pager Motion Sensor Detector Room Bed Alarm and Fall Prevention for Elderly Kids 2 Motion Sensor + 2 Receiver

Wireless Caregiver Pager include 2 Plug-in Pager and 2 Motion Sensor. Signals connected receivers if/when motion is detected.Allows caregiver....
Motion Detector Security Sensor detects movement within 16.4ft range x 110°. It transmits the signal to receivers within the 500ft/150m in open....
Visual and Sound Alerts: When the sensor is engaged, the LED light indicator flashes to perform a visual alert. It's a great visual indicator when....
Easy Installation: EverNary Wireless Monitor Sensor is battery (also can use USB cable) operated for fast and easy use. Each receiver can be paired....
Wide Usage: Use as Entry Alert for home/Business.It also can be used at the front door, back door, mailbox, garage and driveway..

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Door Chimes HUWOO Wireless Door Open Sensor for Business Home Office When Entering Door Open Alert with 1000Ft Range 55 Ringtone 5 Volume Level Adjustable 7 Colour Flash(2 Receiver & 2 Sensor)

[ Wireless & Super Easy Installation ] Wireless door sensor installation is easier than wired installation.Just plug in the Receiver and stick the wireless door sensor on the door/window or elsewhere. After pairing, open the door and window, the receiver will ring.
[ Protect Your Family&Visitor Door Chime ] It will send alarms warning you if your kids who sneak out bedroom or house and will alert you if someone opens your door/window at night.Door chime can be used as a way of remind business when customers coming.
[ 55 Ringtones & 5 Volume & 7 Colour Display ] The door open alert ringtone is equipeed with 55 kinds of ringtones of different style for your choices.5 levels adjustable volume(0dB to 110 dB), 7 colorful LED flash indicator can attract your attention even when the receiver is muted.
[ 1000ft/300m Open Area Range ] The signal distance of wireless door chime kit in open area is up to 1000ft Whether you are upstairs,in the garden,or a few rooms away, you can hear the bell ringing. The entry alert chime just plug into outlet,then stick door sensor to any doors or windows.
[ What You Get] HUWOO door chimes, our worry-free 12-month warranty, and friendly customer service.

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Warehouse Doorbell WDK ERA STROBE- Commercial Wireless Doorbell System with Flashing Strobe Light for Noisy & Hearing Impaired Environments - Ideal for Industrial, Manufacturing, Production & Retail

... volume control from mute up to 95db. Effective even in the largest homes & commercial buildings..
DUAL FUNCTION TRANSMITTER: Can be used as a typical Doorbell Chime push button or as a magnetic door chime where door chimes when door opens making it perfect for a retail door chime, store door entry chime, gate alert, warehouse doorbell or even window alarm..
INTEGRATION WITH 12VDC DEVICES REGARDLESS OF MANUFACTURER: Only this wireless door chime gives you the ability to add 12VDC devices (strobes, buzzers, sirens, bells, etc) with (4) 12VDC outputs - 1 per each of the 4 zones. Transmitter features (1) N/O, N/C relay & plug in receiver has (1) C relay..
EXPANDABLE, CONFIGURABLE & SIMPLE INSTALLATION: Easily pair an unlimited number of transmitters to a receiver - each receiver has 4 zones, allowing for one of 12 melodies per zone. Easy, hassle-free pairing transmitter to receiver..
A WIRELESS DOORBELL FOR HOME OR BUSINESS WITH COUNTLESS USES: Door announcer, call button for elderly, magnetic door entry alert security contact sensor for gates & windows, classroom doorbell, wireless panic button to alert one or multiple rooms or locations far away..

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Wireless Caregiver Pager Call Button,Sanjie Door Alarms for Dementia Patients/Kids Safety/Home Security,Door Sensor Alarm for Elderly/Business/Home/Store/Mailbox,1000Ft Long Range Volume Adjustable

Keep your home/office safety:wireless door sensor chime offers a generous detection area of nearly 260 feet. You could hear doorbell chime as visitors or guests arrive to your home, store, office etc. It sounds to notify you someone enter into, or alert you intruder trying to entry your home. Or remind you when your children/Elderly Dementia Patients open the door/window and sneak around..
Multiple melodies&Loud chime-The receiver Unit has 58 ringtones for your choice. 5 adjustable volume levels from 0 dB to 110 dB..
Provide peace of mind for the hearing impaired: With the built-in LED indicator, the wireless door alert receiver and sensor offer additional assistance when coupled with the receiver to the hearing impaired. Difficulty hearing is no problem with this wireless system..
Easy installation: Plug and Play, Plug the Receiver into an standard Outlet, tear the double-side adhesive tape of the Door / Window sensor and stick them to any door or window..
Customize and Expandable. Each receiver can work with 50 door window magnetic sensors, each transmitter can pair with 20pc....

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Wsdcam Wireless Door Alarm Anti-Theft Burglar Alert Window and Door Open Alarm Magnetic Sensor Pool Door Alarms for Kids Safety Home Security, 110 dB Loud, Door Alarm with Remote

MAGNETIC SENSOR - Door alarm will be triggered immediately once you separate two parts, suitable for windows and doors when opening, the alarm host makes an audible alert once the alarm host and magnet part was separated.
LOUD 110dB - Wireless door alarm with 110 dB loud alarm sound can help to deter the intruder, wake or alert you if at home and possibly alert neighbors, also can use it as door open chime or pool alarm, helps notify you if visitors/children/dementia patients/pets or others are coming/going, and emergency alert system for the older/patients.
4 MODES & 49 ft WIRELESS RANGE - Door alarms with remote, wireless control range up to 49ft. Arm/Disarm/Panic/Doorbell 4 modes controlled by the remote. Great for home, business, apartment, hotel rooms, garage, RV, traveling, pool safety dementia patients and kids safety home security.
DIY PAIRING - Remote can control up to 50 alarms at the same time, one alarm can pair with 8 remotes. control each alarm. DIY home security alarm for windows and doors, more alarms and remotes available for pairing.
EASY INSTALLATION & LOW CONSUMPTION - Simple peel and stick installation. No wiring needed, no screws needed. Battery can last longer, the window door alarm kit with low consumption.

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