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1 pcs White Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. These ¾

1 pcs White Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. These ¾" Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems

These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. The door position switches operate with a built an internal magnetic reed switch that closes when the opposing magnet comes within ¾" of the door sensor. Hence when the door opens beyond the ¾" point the door position switch will switch from a closed signal to an open signal. When this happens the access control system or alarm system will sense the change in continuity and will know that the door or window has been opened. When the door or window shuts, the door sensor will notify your security system that the opening has been closed.
UHPPOTE NC Wired Magnetic Alarm Window Door Contact Sensor Detector Reed Switch White (Pack of -

UHPPOTE NC Wired Magnetic Alarm Window Door Contact Sensor Detector Reed Switch White (Pack of 5)

Description: Screw surface mount contact Switch Type: NC (Normal closed type) Great for use in family and factory window, door. etc.NORMALLY CLOSED: When the magnet together, the circuit is conductive (light on); When the magnet separate, the circuit is not conductive (light off). Features: Dimensions: 50x10x8mm / 1.99"x0.39"x0.31" Working distance: 15-25mm / 0.59"-1" Dry Contact Output: NC (Normal closed) 10W/100VDC/0.5A in MAX Color: White Housing Material: Plastic Cable material: 1007UL #24AWG Product: 9g / 0.32oz Package Including: 5 x Wired contact
Door Window Alarm 10 PCS Home Security Magnetic Sensor 120DB Alert for Home Business -

Door Window Alarm 10 PCS Home Security Magnetic Sensor 120DB Alert for Home Business Kids

Buyer Tips: Please make sure you install the device correctly, the arrows point toward each other and put them the same level.. Wireless Door Window Security Alarm Sensor. Portable and Easy to install, you can take it with on business trips or vacations to keep your family and your safety.Also it will be a good choice for preventing kids leaving house without notice. 125DB volume alarm will not only cause a huge shock to the thief, but also will wake you up from your sleep. Easy installtion: just tear the back of the stickers, and then find the suitable location and paste it on directly. Low Battery Indication Function-- The device will keep flashing light when the battery is low,easily to replace the batteries and keep home security. Features: 1.Portable Wireless Door Window Alarm Sensor 2.Easily mounted by double-side adhesive. Tape it to window or door . 3.Super environmental suitability and stability 4.Dustproof and insect prevention 5.Powered by 3 pcs LR44 batteries Specifications: 1.Sensor type:Magnetic Alarm 2.Alarm type: Sound Alert 3.Material: Plastic 4.Color: Black and Silver 5.Dimension: Detector Part:2.9 x 1.5 x 0.4 inch Magnet Part:1.5 x 0.4 inch 6.Volume of Sound: 120dB
Door Window Alarm, WOHOME Wireless Burglar Alarm Home Security Magnetic Sensor with Loud 120DB/Batteries Included Anti-Theft for Home Office Hotel Suitable for -

Door Window Alarm, WOHOME Wireless Burglar Alarm Home Security Magnetic Sensor with Loud 120DB/Batteries Included Anti-Theft for Home Office Hotel Suitable for Kids/Women/Elder

WOHOME Window Door Alarm:  WOHOME  New Type Wireless Window Door Safety Contact Magnetic Security Alarm. Portable enough to take with on business trips and vacations, keep yourself and your property safe and security. With low power indication function, easily to replace your LR44 batteries without screw. Perfect for preventing kids and babies going out the house without notice, protecting your home or office whether you are in or out.  Door Window Alarm Features: --1.Environmental economy, high temperature resistant, corrosion resistant --2.Convenience in installation --3.Super environmental suitability and stability --4.Dustproof and insect prevention --5.Easily mounted by adhesive. Tape to window or door and done Door Window Alarm Specifications: 1.Sensor type: Alarm 2.Alarm type: sound 3.Material: plastic 4.Color: Silver+Black 5.Size: 2.9" x 1.5" x 0.4" 6.Weight:38g Package: 5 *1pc Door Window Alarm ( 3xLR44 batteries included) Warm Tips: --1.The sound is louder, please avoid scaring children when using it for the first time. --2.If some batteries are not used for a while, please do not stack the batteries to avoid rapid battery drain.
3 pcs Wired White Door Contacts Surface Mount NC Security Alarm Door Window Sensors.These ¾

3 pcs Wired White Door Contacts Surface Mount NC Security Alarm Door Window Sensors.These ¾" Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems

These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. The door position switches operate with a built an internal magnetic reed switch that closes when the opposing magnet comes within ¾" of the door sensor. Hence when the door opens beyond the ¾" point the door position switch will switch from a closed signal to an open signal. When this happens the access control system or alarm system will sense the change in continuity and will know that the door or window has been opened. When the door or window shuts, the door sensor will notify your security system that the opening has been closed.
HENDUN Wireless Remote Door Alarm, 2 Pack, Windows Open Alarms,Magnetic Security Sensor, Pool Door Alarm for Kids Safety, Entry Chime,Apartment Alarm (Pack of -

HENDUN Wireless Remote Door Alarm, 2 Pack, Windows Open Alarms,Magnetic Security Sensor, Pool Door Alarm for Kids Safety, Entry Chime,Apartment Alarm (Pack of 2)

This contact sensor alarm can help to deter the intruder, wake or alert you if at home and possibly alert eighbors.  1.  Compact, magnetically triggered alarm sounds when window or door is opened  2. Multi-purpose - includes entry chime setting that alerts you when people or children are coming & going when you're home 3. Useful in various applications - ideal for bedrooms, hotels, garage, apartments & dorm rooms; pool safety alarm; sliding glass door&windows;interior door alarm; fridge open 4. Easy to change from off to chime to alarm mode by remote  5. Easy to install - self-adhesive types included   ✅KID'SAFE GUARDER- Excellent Home use product,tiny and fashion, install for kids safety, such as for staircase refrigerator door alarm, patio door alarm, pool door alarm.  Product Showcase  An alarm need two 2AAA alkaline batteries ( not included ).  A remote need a 12V/27A alkaline battery ( included ).  They can work for at least a year with low-consumption design. Not only an alarm, but also a doorbell&reminder for children and elderly when opening door.  Package Size: 4.2*2.5*1.5inch  Package Weight: 71g  Package: 2* Alarm, 2* Magnet box, 2* Remote Controller, 2* User Manual  note: This one has no vibration sensing function, the other one has B07KPKLBCR
RSV Smart Door Window Sensor Compatible with Alexa Google Home and IFTTT Magnetic Security Sensor Remote Wireless Security Alarm WiFi Door Sensor with APP Compatible Home, -

RSV Smart Door Window Sensor Compatible with Alexa Google Home and IFTTT Magnetic Security Sensor Remote Wireless Security Alarm WiFi Door Sensor with APP Compatible Home, Office,Store

RSV Window/Door sensor for mornitor what you care about What can RSV Window/Door sensor do for you? Mornitor dynamic state of door/window/cabinet/safe box/drawer; Easy to set up simple alert system,don't have to anxiety at all; Convenient for you to check up the state of home,office,store,warehouse Specification: Battery: AAA1.5V×2 (Not include) Standby Current: ≤5uA Protocol: IEEE 802.11B/G/N Wireless Range: 45m Operating Temperature: 0℃-40℃ Operating Humidity: 20%-85% Storage Temperature: 0℃-60℃ Storage Humidity: 0%-90% Standby time: 6 Months Wireless Type: 2.4GHz FAQ: How can I attach it to the door or window? There are nails or adhesive tapes to install the sensor. What kind of power supplier does it have? Supplied by AAA1.5V battery ×2, not included in the package Package Contents: 1x Door Detector Pair 1x User Manual; 2x 3M tapes; 4x Screws
Mbangde Lot of 6 Wired Magnetic Door Window Contact Reed Switch Personal Gap Alarm - Cabinet Strip Light Switch NC DIY -

Mbangde Lot of 6 Wired Magnetic Door Window Contact Reed Switch Personal Gap Alarm - Cabinet Strip Light Switch NC DIY Kit

NO AND NC: NO means Normally Open: when the magnet separate, the circuit is conductive;When the magnet together, the circuit is not conductive, NC means Normally Closed:When the magnet together, the circuit is conductive; when the magnet separate, the circuit is not conductive.Wired magnetic door/windows contact can be added to wireless/wired Alarm Systems.(some wireless system has wired zones).They are best for protecting doors, windows and any other other you want to protect.Technical Parameters:Economic solution for Non-metal door/window protection;No external power supply, connect to wired or wireless alarm control panel GND and NC ports directly!ABS material;Alarm distance: 15mm-25mmPackang included: 6 x NC Reed Switch
Personal Security Window & Door Alarm Bell | Wireless Sensor Door Window Burglar Alarm | Pack of -

Personal Security Window & Door Alarm Bell | Wireless Sensor Door Window Burglar Alarm | Pack of 10

The Hiistar Personal Security Window/Door Alarm provides a simple-to-use, cost-effective security solution to protect you and your family against home invasions thanks to the 120-decibel alarms, loud enough to make a would-be intruder think twice about entering through your doors or windows.The alarm is also extremely easy to use. Te window/door alarms feature a contemporary design with easy access buttons and cohntrols for simple operation. This straightforward concept makes using the Hiistar Personal Security Window/Door Alarm intuitive, no matter what your technological skills may be. The Hiistar Personal Security Window/Door Alarm also includes two independent window/door alarms, each with a built-in 120-decibel alarm for even greater home security. With no wires required for installation, protecting any window/door in your home is as easy as attaching the alarm to your window/door with double-sided tape (included). Each window alarm features an on/off/chime switch for easy operation and a low battery test button for checking battery life. Perfect for homes, apartments, dorm rooms and offices.Features:New and high quality Super loud 120 dB alarmConvenience in installation--just peel and stick Super environmental suitability and stability Dustproof and insect prevention Easi...
10 Pair RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch -

10 Pair RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White

Description: 1.NC means Normally Closed:When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ). When make order,pls check carefully! 2.These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. 3.Work as an anti-theft alarm, ideal for metal door and window.
Window Alarm, EEEKit Premium Mini Wireless Window Door Burglar Security Alarm System Magnetic Sensor Guardian Protector for Home Caravans Car, Set of - Magnetic Security Sensors
Magnetic Security Sensors

Window Alarm, EEEKit Premium Mini Wireless Window Door Burglar Security Alarm System Magnetic Sensor Guardian Protector for Home Caravans Car, Set of 8

8-pack Door Window Alarm, Home Window Security System Wireless Magnetic Sensor Switch Burglar Anti-Theft - Magnetic Security Sensors
Magnetic Security Sensors

8-pack Door Window Alarm, Home Window Security System Wireless Magnetic Sensor Switch Burglar Anti-Theft Alarm

Window Alarm, 10-Pack Mini Window Door Entry Alarm Burglar Security Alarm System Magnetic Sensor Protector for - Magnetic Security Sensors
Magnetic Security Sensors

Window Alarm, 10-Pack Mini Window Door Entry Alarm Burglar Security Alarm System Magnetic Sensor Protector for Home

Mini Wireless Window Door Security Alarm System Magnetic Sensor, Set of - Magnetic Security Sensors
Magnetic Security Sensors

Mini Wireless Window Door Security Alarm System Magnetic Sensor, Set of 8

GREENCYCLE 1 Set (1 Remote,1 Alarm) Multi-function Wireless Anti-Theft Remote Control Burglar Alert Door Window Security Alarms Emergency Magnetic Sensor Chime Door - Magnetic Security Sensors
Magnetic Security Sensors

GREENCYCLE 1 Set (1 Remote,1 Alarm) Multi-function Wireless Anti-Theft Remote Control Burglar Alert Door Window Security Alarms Emergency Magnetic Sensor Chime Door Alarm

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Window Door Magnetic Entry Security Alarm

Magnetic Security Sensors

Wireless Window Door Magnetic Entry Security Alarm. Охранная звуковая сигнализация, купленная в китайских магазинах. Позволяет контролировать открытие окна или двери в жилых и не жилых помещениях. При срабатывании издает очень громкий пронзительный звук. По заявленным характеристикам 90 dB, но на самом деле по громкости чуть уступает сирене автомобильной сигнализации (они вроде около 15-20 dB) Купил здесь : http://s.click.aliexpress.com/e/AQJayBeuf . Посетите мой второй канал YouTube: ht...

Tags: Burglar Alarm (Invention),Door,Window,Entry,Ope...