ABB C505 Controller
	One of the following option boards may be fitted Type 01 gives 2 extra relays and 2 Digital Inputs Type 02 gives 1 extra Analogue Input, 1 extra Analogue Output, 2 Digital Inputs and 2 extra relays. Type 03 gives RS485 Modbus Communications Type 04 gives 1 extra Analogue Input, 1 extra Analogue Output, 2 Digital Inputs, 2 extra relays & RS485 Modbus Communications