middot A piezoelectric sensor is attached to a window middot If the window is broken the energy released into the piezoelectric sensor will cause the relay to latch middot An on board reset button returns the relay to an unenergised state middot Ideal part of a DIY home alarm system middot Single pole changeover relay rated at 24V 10A not suitable for direct switching of mains voltages middot Requires a 12V power supply
