The AC-3151 Remote I/O Unit has two Wiegand interfaces, four (4) optically-isolated digital inputs, and two (2) digital relay outputs and can be used when extending the reach of a small access control system to include more remote areas. The digital inputs can be used for monitoring the status of a door lock, push-button, or the position of a door or turnstile. The digital relay outputs can be used to switch resistive loads (e.g., logic circuits, lamps, resistive elements, and, with special precautions, inductive loads such as solenoids, locks, and relays).

	Dual Wiegand interface
	KeyMasterTM Pro 4.0 & KeyMaster Lite 3.0 support
	EIA-485 scanner network interface
	Four (4) opto-isolated digital inputs
	Two (2) change-over relay outputs
	Addressable for communication with EIA-485 network
	12VDC operation
	Compatible with AC-3114 and AC-4101 system controllers
	Compact size - 80mm (3.15in.) x 120mm (4.72in.)x 60mm (2.36in.)
	Supports two (2) Wiegand readers