This set of door open warning circuits It is a multi-purpose circuit that can be installed. To remind you to keep doors or windows open in places such as offices, houses, cars, etc.

Technical features

     Uses 9-12 volts DC power to power the circuit.

     While standby, the maximum current is approximately 1.9 microamps at 9 volts DC.

     While working, it consumes a maximum current of approximately 60 milliamps at 9 volts DC.

     You can adjust the delay before the buzzer sounds from 10-160 seconds.

     There is a magnetic switch provided within the set.

     Printed circuit board size 2.81x1.84 inches