APC ACPA4000 User Manual

The controller board provides connectors for output relays and input contacts. The connectors can be 
used with any dry-contact sensors. The connectors are designed to monitor circuits that have no voltage 
potential of their own. Connecting the contact or relay to any circuit other than a dry closure connector 
may result in damage to the main control board.

You can connect any normally open (NO) or normally closed (NC) dry contact sensor, including:

•  magnetic contact switches
•  window foil
•  tamper switches
•  heat detectors
•   water  sensors
•  pressure sensors
•  smoke detectors

This figure shows the four positions on the output relay connector and provides the individual pin 
assignments for each position.

Note: The terminal block

 

accepts wire sizes from 1.6mm

2 

(14AWG) to 0.4mm

2

 (26AWG).

Electrical Hazard: Control board connections should be made only to Class 2 circuits.

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