In emergency state (RED LED on) the Arduino waits for another 100 seconds for a valid command to leave emergency state. If no command is decoded the ATMega328 CPU (on the Arduino PRO Mini) is beeing ...

connecting Transistor Emitter to Relay and Base to Arduino Pin 2 and Collector to 5V in Arduino . connecting Push Button to Pin 8 in Arduino and Terminal 1a to GNR and Terminal 2a to 5V in Arduino .