A simple kit which has many applications, security systems in homes and offices or entry and exit door control. Using RFID technology a relay can be activated when card or fob is in close proximity (100mm) to the detection coil. The coil can be mounted up to 5m away from main PCB. Supplied with two cards, other cards and key fob style actuator is also available. The keyfob is suitable for Wiegand readers and Wiegand data output.