Door and window sensors can monitor all types of doors, windows, garage doors. The sensor is equipped with a variety of functions, and it can be used for automatic light control, temperature sensing, access control for home surveillance, and other such systems. The special sensing components used inside the sensor can accurately detect if the door or window is opened or properly closed in real time. It can be used for the main door, garage door, all types of windows, bedroom doors and even safety box. The built-in and long-lasting batteries can be used for up to one year without replacing.