A system and device for insuring the integrity of an automatic garage door has a sensor to determine the status of the door with respect to a predetermined position and a programable actuator which provides a positive signal for automatically activating a warning or alert system when the door is in predetermined position when the programmable actuator is activated and the sensor indicates that the door is at other than the predetermined position. Preferably the programmable actuator is a timer and the predetermined position is closed. The timer can be remotely programmable. The actuator can also be triggered by a sensor of an event such as darkness. Remote means are provided for manually activating the door to return to the desired position by an RF frequency transmitter.