SMOKE/GLASS DOOR SENSOR

SMOKE/GLASS DOOR SENSOR

Door and window sensors make up the backbone of any home security system. Most systems come with a set number of sensors, and then you can add more for an additional fee. Ideally, the sensors get placed on every door and window in the home, though some people only use them on the lower level of the house to save money. If a door or window gets opened or breached when the alarm is on, the sensor sends a signal to the main control panel, triggering an alarm.