Smart Door and Window Security Sensors (3-Pack)

Full Feature Overview

THAT WAS EASY! INSTALL IN MOMENTS: Scan the sensor's QR code, name it, peel off the 3M mounting tape, and press the sensor and magnet to your door and frame. Instantly add security to your home or business!

WHY PAY A MONTHLY FEE? SELF-MONITOR AND SAVE. Take advantage of multiple notification methods for alerts about alarms and off-normal events. See "Know Now!" for more details!

MORE THAN JUST A DOOR ALARM! Place a sensor on each exterior door and window. 'Protect your Perimeter.' Activate and control lighting. Use a sensor on your fridge or freezer to prevent food loss. Monitor activities, keep an eye on children and elderly loved ones. Protect liquor and medicine cabinets, gun safes, storage lockers, and boxes.

DOOR LEFT-OPEN REMINDER! Our unique alert system can notify you if a door or window stays open too long. Set the maximum time. Use our SpeakerHub, an audio hub, to sound a tone or message when a door is opened or left open.

NOT YOUR FATHER'S DOOR SENSOR! This is a sophisticated electronic device using the latest technology. 24/7 cloud server supervision ensures your system is always online, with strong signals and battery checks. (Hub required for full functionality)

DEVICE-TO-DEVICE PAIRING! This unique feature lets you pair two or more devices. Even without internet or power, they will carry out their paired actions. Pair your door sensors with a siren alarm, and turn it off when you disarm your system. Use SirenFobs or FlexFobs to control the siren.

DON'T TRY THIS WITH WIFI! LoRa technology offers a long-range, up to a quarter-mile open-air range at 900 MHz. Place YoLink devices where WiFi can't reach—basements, separate buildings, RVs, and boats on your property. Prepare to be pleasantly surprised!