Home Car Alarm Security System Electronic Kit
This circuit is an alarm for the home, car and a lot more. It employs a magnet and reed switch to trigger the circuit. An integral piezo sounder produces the alarm sound (100dB). There is also a relay capable of switching on an auxillary item like a siren or light.
L: 3-1/16" W: 1-15/16" H: 1/2".
Requires 9 volt battery.
Relay contacts rated for 240VAC @ 7A.