Door Opening Alarms

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Bestseller No. 1
Koostone Wireless Magnetic Door Entry Sensor Alarm Chime, Door Open Alert for Shop, Garage, Window Security for Kids, Elders Safety, Anti-theft, 2 Secure Contact Sensors, 1 Doorbell Plugin Receiver
  • ♥【How it works】Koostone Wireless Door Chime comes with 2 door/window sensors and 1 receiver, and each sensor can set a separate sound with the receiver, that means you can know the front door or the back door or the mailbox opens without needing to go to see it. The sensors will detect the door/window, and will be triggered to send out a signal when the door/window opening. Receiver will receive the signal and alerts. It can be used as door chimes when door opens for business.
  • ♥【55 Ringtones, 5 Levels Volume Control, 400ft Wireless Range】55 Unique ringtones/chimes with 5 Level Volume for a 0-120dB volume range, you can mute the door alarm or choose a favorite level volume. The receiver cover a distance of 400ft Wireless Range, wireless signal can also go through walls.
  • ♥【Expandable】Each door sensor or receiver can be expandable, add more receiver or sensor to setup different chimes in multiple areas for front door, back door, sliding door etc.
  • ♥【Easy Installation】Step 1: Choose a favorite ringtone and pairs the sensor and receiver. Step 2: Adhere the magnetic sensor well on your door/window and plug the reveiver into a socket. All ready… PS: the same way to set second sensor ringtone, and you can choose a different chime.
  • ♥【QUALITY GUARANTEE】Koostone wireless door chimes provides a 60-DAY WARRANTY and AFTER-SALES SERVICE within 24 hours. Complete satisfaction guaranteed!
SaleBestseller No. 2
Wireless Door Sensor Alarm Chime BITIWEND Door Window Sensor Chime for Office/Home/Shop Door Enrty Chime with Operating Range 600ft 58Chimes Door Alarm Sensor,1 Door Sensor+1 Plug-in Receiver, Black
  • 【Door/Window Open Alert】By using this door open chime kit, you can be alerted when someone open the door/window.NOTE: it is not a continuous ringtone,only play ONCE.
  • 【Wide Wireless Range】With wireless range 600ft operation in OPEN area,you can use it on home,office,garage,store etc,never miss any visitors.
  • 【5 Sound Level & LED Indicator】5 Sound level control let you adjust the sound from 0db-110db; LED indicator offer additional assistance to the hearing impaired.
  • 【58 Ringtones & Expandable 】58 unique ringtones allow you to set favourable chime or change it by reseting and pairing. Also,you can add more receivers/sensors to set different chimes.
  • 【Tips & 1-year Warranty】The door sensor is NOT waterproof,please avoid installing in wet or damp.1Year Warranty,if it is defective,please don't worry, contact with us directly to get a free replacement.
Bestseller No. 3
Fosmon [WaveLink Wireless Door Open Sensor Alarm Chime, Security Window Entry Alert for Home Garage Shop Store (Operating Range 120M/400FT | 52 Chime Tunes) - 1 Magnetic Sensor, 1 Plugin Receiver
  • [WIRELESS CONTEMPORARY DESIGN] Never miss anyone at the door with a Fosmon WaveLink Wireless Entry Alert Doorbell. The wireless and portable design allows you to install the doorbell anywhere in your home, work, retail store or business. Fosmon WaveLink doorbells are wire free and very easy to install with all the included accessories.
  • [MAGNETIC DOOR / WINDOW SENSOR & WIRELESS PLUG-IN RECEIVER] The magnetic door / window sensor activates when the magnetic stripe is separated. This transmits a signal to the plug-in portable receiver and alerts you with a ringtone every time the door / window is opened. Portable wireless plug-in receiver plugs into a standard 220 volt UK outlet. Additional sensors (51018HOM) sold separately.
  • [UNIQUE RINGTONES WITH VOLUME LEVEL] With 52 unique ringtones and 4 volume levels, you can personalize your doorbell however you prefer.
  • [BUILT-IN LED INDICATOR] Fosmon WaveLink wireless doorbell receiver and transmitter features an LED indicator that creates a visual alert for the hearing impaired.
  • [LIMITED LIFETIME WARRANTY] Includes a Limited Lifetime Warranty
Bestseller No. 4
Window Door Alarm 2 Pack Noopel Home Security Ultra-Slim Door and Window Alarms Door Window Burglar Alarm with LOUD 120 DB Siren - DIY EASY to Install (2)
  • Magnetic door alarm sensor 120db alerts a person to a door or window opening.
  • Prevent children going out the house without notice.Also ideal entry warning for your home,office,apartment,garage and so on.
  • Ultra-thin door and window alarm with 2 adjustable settings (off/on).3xLR44 batteries included.
  • Easy installation,No wiring needed!No screws needed!Included double sided tape.
  • Ultra-sensitive also Low battery indicator to check battery life.This is a PERFECT AFFORDABLE compliment for your home security.
Bestseller No. 5
Wireless Door Sensor Alarm Chime, BITIWEND Home Security Window Entry Alert With Operating Range 320 feet/52 Chimes For Home/Garage/Shop (1 Magnetic Sensor + 1 Plug in Receiver)
  • 【New design & Wide Working Range】: The wireless and portable design allows you to install the doorbell anywhere in your home, work, retail store or business.The range of wireless receiver up to 320 feet in OPEN area. Magnetic door sensor will automatically trigger the receiver when separated and the receiver will alert immediately whenever the door or windows is opened.
  • 【Expandable】 Each wireless receivers can work with 20 transmitters at most and each transmitter can add more receivers.
  • 【52 Music with Loud dB】 52 unique ringtones/chimes with 30-110dB volume range allow your wireless door entry alert system to meet any need.
  • 【Mini Contact Sensor】 Door sensor part 1: 2.5cm * 1cm * 0.8cm; Part 2: 4.5cm * 2.5cm* 0.9cm. The Magnetic sensors are small size and can be installed or placed at any in door position.
  • 【Easy to Install】 Requires no wiring, Just plug the door entry alarm receiver into any standard outlet, Tear the double sides adhesive tape which on the black of mini door sensor and stick them to the door or window.
Bestseller No. 6
VOXON Magnetic Door and Window Alarm Sensor 2 Pack 2 Modes Window Door Burglar Alarm with LOUD 120 DB for Kids Safety Home Shop Security
  • 120 LOUD ALARM: Loud 120 decibel alarm sounds when door or window opens, helps deter intruder and alert residence, prevent kids and babies going out the house, protecting your home or office whether you are in or out.
  • 3 ASJUSTABLE SETTINGS off/chime/alarm: It has 2 types of alarm modes--#Alarm: ordinary alarm mode; #Chime: wireless Doorbell mode (“Ding dong”, rings once as a welcome tone )
  • ULTRA-SLIM DESIGN: Size: 6.2 x 3.2 x 1.6cm, ultra-slim door and window alarm with Built in low battery test button to easily check battery life, Includes 4 LR44 batteries for each alarm. Perfect for home, garage, apartment, dorm room, mobile home, RV, office and more
  • EASY INSTALLATION: Easily mounted by adhesive, tape it on the window or door then all is done! No wiring needed! No screws needed! Completely DIY! (NOTICE: make sure the gap between the alarm and magnet part within 1cm.)
  • WHAT YOU GET: VOXON 2 packs Magnetic Door and Window Alarm Sensor, 4 x Double-sided adhesive tapes, 1x User Manual. Free lifetime technical support and 18-month manufacturer's warranty.
Bestseller No. 7
Wireless Door Open Sensor Chime,PHYSEN Security Window Entry Alert,Magnetic Door Alarm Sensor & Plug in Receiver,Operating Range 400ft,52 Chimes,4 Volume Levels,LED Flash,for Home/Office/Store
  • ✨【Memory Function & Expandable】-PHYSEN wireless door chime has memory function, the receiver will remember the last ringtone and volume you choosed, no need to reset even if after a power outage. Code learning function allows you to add more additional magnetic door sensors and receivers as needed, then you can customize different ringtone for each door freely.
  • ✨【Strong and Stable Wireless Range】-The wireless range is up to 400 feet in open area, strong enough to cover each door and window in your house. The magnetic door sensor will automatically trigger the receiver when it is separated, so when the door or window is opened the receiver will ring up. It can be widely used in home, store, office, apartments, villas, etc.
  • ✨【52 Ringtones & 4 Volume Levels】-52 Beautiful ringtones allow you to change the ringtone freely. And you can also program different chimes for different push buttons, then you will clearly know which door someone is visiting; 4 Adjustable Volume Levels from 30dB to 110dB, meet your different needs.
  • ✨【Long Battery Life & LED Indicator】-The door sensor is powered by battery, long lasting performance and easy to replace battery. With the built-in LED light, which can take care of some hearing impaired person.The magnetic door,window sensor activates when the magnetic stripe is separated. This transmits a signal to the plug-in portable receiver and alerts you with a ringtone every time the door,window is opened.
  • ✨【Easy to Install】-No need battery for receiver, Portable wireless plug-in receiver plugs into a standard 220 volt UK outlet.. You can choose a ringtone you liked and pair it with the magnetic door sensor, then tear off the double-sided tape behind door sensor, placed it on the door. Quality is guaranteed, all our door sensor alarm have passed the CE,RoHS,FCC Certified. If you have any questions in use, welcome to contact us freely via e-mail!
Bestseller No. 8
NRS Healthcare ELRO Magnetic Door and Window Alarm - Pack of 3
  • Alerts a person to a door or window opening
  • Good for people who wander or to increase home security
  • Alarm unit measures 65 mm length by 30 mm width by 22 mm depth
  • Magnetic bar measures 55 mm length by 12 mm width by 12 mm depth
  • NRS Healthcare ELRO Magnetic Door and Window Alarm - Pack of 3
Bestseller No. 9
Wireless Door Handle Alarm - Hanging Intruder Alarm Door Handle - Movement Detector Handle Alarm - Door Knob Touch sensor by DEFENDER
  • ✅ DOOR HANDLE ALARM - This door handle alarm is a ultra loud deterrent to any potential criminals. This security product gives out 125 dBs siren when activated making any intruder rethink their intentions.
  • ✅ FULLY CUSTOMISABLE DOOR ALARM SETTINGS - This hanging door alarm has the functionality & sensitivity adjustment so you can choose the parameter of the siren. The door alarm also has a handy exit delay so you can set it before leaving.
  • ✅ LIGHTWEIGHT & PORTABLE HANGING INTRUDER ALARM - Lightweight and portable intruder door alarm can be taken anywhere with you & used in any property on any door. Great for use when travelling or staying in hotels when on the road.
  • ✅ EASY TO USE MOVEMENT DETECTOR HANDLE ALARM - No installation required, simply hook around the back of any door handle. This design is primarily for metal door handles.
  • ✅ JOIN 1000'S OF SMART HAPPY CUSTOMERS USING OUR DEFENDER SECURITY PRODUCTS. Our customers know that the DEFENDER brand means quality and protection. This door door intruder alarm offers great value and quality. We offer email support 24/7 plus get a 100% money back guarantee if you're not happy.
SaleBestseller No. 10
Shackcom Door Window Alarm, 4 Pack, 120DB Magnetic Burglar Alert Sensor with Bonus 10 Pack Batteries, Wireless Alarms - Loud Door Alarms for Kids Safety, DIY for Home Security, Office Protection
  • 120 LOUD ALARM – Shackcom door window sensors loud enough to detects entry, prevent kids and babies going out the house, protecting your home office, garage, dorm room, or apartment whether you are in or out. You can definitely hear it from another room to alert you. (audible up to 750 feet/230M away). No worry the young children could mess with it, just have it up high where they can't reach it. Work on sliding doors, windows, drawer, fridge
  • EASY INSTALLATION - Wipe the flat surface, peel off sticker, mount the alarm on door and magnetic stripe on door frame. Done!! 【NOTE: 1. Take out the plastic insulation sheet in battery compartment before use, 2. The small triangle on the side of the strip magnet is aligned with the small triangle on the side of the alarm with a spacing of less than 0.39inch(10mm), 3. Your frame and window or door must be flush, make these two components must be installed very flush with one another】
  • SMART DESIGN with Two Volume Levels- The alarm and magnetic stripe are separated more than 0.39inch(10mm), it keeps going off until you close door(make them connection) or turn it off(switch to the button "OFF"). Size: 2.51" x 1.18" x 0.59'', no much space needed to install. It has 3 adjustable settings (on/off/set). Switch to button "SET", soound like DI..., won't scare your kids or pets decide to leave without your knowing. Switch to the button "ON", beep...sound like police siren, very loud
  • POWER SAVE– Battery-saver feature only uses energy when the alarm is sounding. When the window alarm isn't in use, battery for power supply can be used for more than one year(3 * LR44 batteries included per alarm and bonus 10 batteries for backup) . You will easily know when to replace the batteries when alarm become weak, no worry about failing to work. Easy to replace the battery, just pull out the battery compartment cover. 【Recommend you check the battery every months, ensure it works good】
  • Alerts you of a entry, potential break in or a window/door has been opened with loud alarm immediately. It can also be used as a doorstop alarm, pool door alarm, garage door alarm or sliding door alarm. Any reason you are not satisfaction with our alarms, please contact us directly for refund, we will reply to you within 24 hours

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