Door Gap SensorCX-DG218

The Door Gap Sensor is a surface mounted magnet and reed switch. The Door Gap Sensor is used to monitor doors and windows. If a window or door (which is fitted with the door Gap Sensor) is opened when the system is Full Arm or Partial Arm, Door Gap Sensor will send a signal to the Main Unit to activate an alarm. Door Gap Sensors are very useful when using Partial Arming function...