When the momentary push-button (PB) switch is closed, 12V from C3 is applied at A, causing T2 to turn on. This state grounds the Reset bus, turns on PFET T4 by putting V gs(on) on its gate through the ...

The switches support individual timers for Wave to Open time, Push Button Open time, and piezo buzzer times are individually programable. The device is versatile, durable, and suitable for ...