User manual

3.3 Contact Closure Sensors

On models with the contact closure sensor feature (see Table 1), the chassis

provides an optional 8-pin connector (4 contact sensors) on the back of the

chassis that can be used to sense the state of external alarm conditions. Each

of the four sensor pins can detect if the wired circuit is open or closed, or has

high or low voltage from the external equipment. A DIP-switch located on the

back of the chassis enables or disables alarm reporting. If no external equipment

is connected to the 8-pin connector, it is important to disable the alarm reporting

by configuring each DIP-switch to the DISABLE position. See Figure 5 for the

location of the switch and terminal connector.

Enable

Disable

1 2 3 4

Alarms

+ Rt

Figure 5: DIP-switch and Alarm Terminal Details

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