Top 10 Best 4 Pack Magnetic Door Sensor

Includes 4 windowdoor alarms, each with 3 adjustable settings offchimealarm. Loud 120 decibel alarm sounds when door or window opens, helps deter intruder and alert residence. Easy and convenient to install, requires no wiring, mounting hardware and instructions Included, designed for indoor use only. Built in low battery test button to easily check battery life, Includes four LR44 batteries for each alarm. Comes with a 90 day limited warranty Perfect for home, garage, apartment, dorm room, mobile home, RV, office and more.

Package content You will receive 4 pieces of brown surface-mounted magnetic door switch. The rich quantity can perfectly meet your daily needs and applications. Contact type NC Action distance 15-20 mm Working voltage 100V Working current 0.5A.. Preferred material The wired reed switch is made of high-quality ABS plastic, which is durable, heat-resistant and cold-resistant, and has a longer service life.Fine workmanship, simple and generous, is the best choice to protect the safety of your doors and windows. NC type NC stands for normally closed. If the magnet and the switch are combined, the circuit will conduct electricity if the magnet and the switch are separated, the circuit will not conduct electricity. Wired reed switch and wire connection alarm control panel are used together to add extra security to your home.. Widely used Reed switches are very suitable for installation in windows, cabinets, drawers, doors, etc. 2 installation methods are available for you choose. You can choose to fix the installation with the included screws, or you can tear off the adhesive and directly glue the door magnet to the place where you need to install it.. Risk-free purchase-Biaungdo is committed to providing customers with the best quality goods and services.Just try our products and we believe you will love them as much as we do..

Door window alarm sounds 120db loud when door or window opens, helps deter intruder thieves and alert residence.. Ideal door alarm for kids safety to prevent children babies going out without notice. Also perfect entry warning for your home, office, apartment, garage, dorm, RV and so on.. Easy to install by simple peel and stick as includes double sided tape No wiring needed No screws needed. Includes four ultra-thin door and window alarms, each with 2 adjustable settings offon, each with 3XLR44 Batteries included.. Built-in low battery indicator to check battery life easily..

libMultiple Alarm Modesb Burglar alarm with 130DB loud,continue 30 seconds alarm Doorbell Sound as Door Chime,Alert someone come in  Di-Di Intermittent soundRemind someone to close refrigerator doormedical kit.Switch off can stop all working.. lib125dB Burglar Alarmb The Door Window Alarm on Burglar Alarm,130db loud when door or window opens, helps deter intruder thieves and alert residence.li. libEasy to install bUse Double-sided tape, tape it on a window door or anywhere you need, then all done No any wiring or screws needed.Fit for Home, office, apartment, garage, pool door, medicine box, refrigerator etc. Also for trip.li. libInstant Alarm Reminderb The minimum trigger distance is 0.59inch.The alarm will be triggered and alarm immediately when  doors or windows be opened.li. libDouble-side magnetic sensor alarm b More places can use it than single side sensor.IT FITS ON FLAT DOOR AND FRAME..

DETECT EVERY AREAS WITH WIRELESS DOOR ALARM This open door chime can be a good reminder ,it will send alarm warning if you toddler who always try to sneak out of their bedroom or alert you when someone opening your doorwindow or your pet coming home.. 55 MELODIES 5 VOLUME Wireless door alarm features 55 chimes and 5 level adjustable volume0 mute dB to 110 dB loud sound to meet your needs for different occasions. LED indicators are suitable for the elderly and hearing impaired. Remembers your last melody and volume level after a power outage no need to reset to your previous settings. LONG RANGE EXPANSION SYSTEM Entry door chime for business signal can easily cross through metal doors or walls, you will never miss a visitor, even if you are a few rooms away or on another floor. Note. And each door alarm sensor can be paired unlimited magnetics sensors, you can also pair different ringtone to each sensor, so that you can realize exactly which door is triggered. EASY INSTALLATION For this wireless door chime,please install AFTER pairing, just plug the receiver into outlet, tear the double-side adhesive tape stick door sensors to any doors or windows. Ideal for for business, home, apartment, classroom, office, basement and more. HEART-WARMING GIFT WARRANTYYou also can use this entry alert chime as a gift for relatives and friends to used to remind visitors, family anti-theft,etc. It has a 1-year warranty and please contact us if you have any questions for our door bells chimes , and we will serve you wholeheartedly..

Product Name Door Magnetic Switch Maximum Current 0.5AVoltage 100V. Rated Power 10WContacts Status NC Operating Distance 12mm. Cable Length 25.4cm10 Size 17 x 11mm 0.67 x 0.43HD. Color White Housing Material ABS. Weight 30gpackage Content 4x Door Magnetic Switch.

Ultra-compact magnetic windowdoor alarm with 110 dB siren alerts the occupant and scares away would-be intruder. Inexpensive yet convenient, effective magnetic sensor alarm for entry doors, sliding patio doors, backyard side gates, windows, safes, cabinets and so on. No wiring necessary, fool-proof, effortless, peel-and-stick installation with the included double-sided adhesive foam tapes. Tamper-proof design disarm the alarm by moving the button to the OFF position otherwise the alarm will sound continuously until the door or window is closed. Battery powered by 2 AAA batteries not included.

Loud 110dB-enough to scare the intruder or notify neighbors.Prevent Robbery.. CHIME MODE - is ideal to prompt you when child, guests or dementia patients are opening the door.. ALARM ACTIVATED - when the parts are separated, recombined stops.. EASILY INSTALLATED - in pool doorsrefrigeratordrawerfreezersinterior door for kids safety. battery can last longer.. 100 SATISFACTION SERVICE - 3xLR44 batteries included, also Low battery indicator.HENDUN provides 100 customer satisfaction guarantee, 1-year warranty and 247 customer support..

With double side tape, easy for installation. Suitable for 22-28 AWG wirs. Reliable quality with white case. Normally closed typeNC, switch closed when door is closed.. more than 12 inch operation distance , suitable for most doorwindows.

4 x sets of MC-38 Wired Door Sensor Magnetic Switch. Removable adhesive paper on the back easy to stick on the flat surfaces. Works with Arduino, ESP32, ESP8266, Raspberry Pi, or any kinds of microcontroller. Used to detect doorwindow open or closed. Tutorials for Arduino and ESP32 are provided.