Chapter 3 Hardware Overview
MES-3528 User’s Guide
39
3 Insert the alarm connector into the ALARM slot.
Figure 15 Connecting a Sensor to the ALARM Slot
4 To connect an output device such as an alarm bell, repeat the previous steps but
this time connect to either pins (1,2) or (2,3) on the ALARM connector.
You can also daisy-chain the external alarm to another ZyXEL Switch which
supports the external alarm feature. If daisy-chaining to a ZyXEL switch that is a
different model, check your switch’s documentation for the correct pin
assignments.
1 Use wires of the correct gauge to connect either of the power output pin pairs (1-
normal close, 2-common) or (2-common, 3-normal open) on the ALARM
connector to the input power pin pairs of an ALARM connector on another ZyXEL
Switch.
12311 10 45698710
Smoke
Detector
Spring
Clip
ALARM
Connector
Alarm Input Pins
Alarm Output Pins
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