The AC-4311 I/O controller acts as a slave device on an EIA-485 network and has eight (8) digital inputs and (8) digital outputs. The digital outputs can be used to switch external circuits such as magnetic locks, strike locks, and alarm sirens.

	KeyMaster® Pro & KeyMaster Lite support
	EIA-485 terminal network interface
	RS-232 host interface
	Eight (8) opto-isolated digital inputs
	Eight (8) open collector transistor digital outputs
	Status and diagnostic indicators
	piezo audio buzzer
	12 to 14VDC operation