Automatically switches off 3 minutes after alarm was triggered. Ready to connect to siren. This alarm system is expandable and a large number of different sensors and accessories can be added. A key switch can be added to switch the system on or off. The kit includes all components, PCB, construction instructions and a hi-impact styrene box.
Instruction manual is included.
A piezo buzzer is activated when the sensor is triggered. A power failure does not put the alarm out of action. If the wires are cut, the alarm is also activated. There are two independent channels. Light emitting diodes indicate which channel was activated.