Open and Close Reminder Tuya 433mhz Smart Door Sensor for Home

What is a Window Sensor?

A window sensor is a piece of security equipment that keeps track of whether a door or window is open or closed. It is an essential part of a complete home security package, and will give you peace of mind in knowing who is coming or going from your house and when. Their simple technology is dependable and reliable, which makes them an ideal addition to any property protection package.

How does a window sensor work? A window alarm works similarly to a door alarm, it consists of two pieces. One half contains a magnet while the other piece houses the sensor circuit and security alarm transmitter. The pieces are mounted to different parts of the door or window. One-piece remains stationary and is mounted on the frame or molding around the window, and the other piece is mounted to the edge of the moving part of the window. When the window opens, it separates the magnetic contact between the two sections which trips an electrical circuit called a reed switch. When the two halves of the sensor are close enough in contact with each other, the magnetic field is constantly pushing the wires of the reed switch apart. When the window opens, the magnet moves away from the switch, which triggers the device to send an alert to your alarm keypad or home security app.