ZyXEL Communications MGS3520 Series - Page 32

Chapter 3 Hardware Overview
MGS3520 Series User’s Guide
32
Figure 16 Connecting a Sensor to the Signal Slot
4 To connect an output devicel, repeat the previous steps but this time connect to either pins (1,2) or
(2,3) on the Signal 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 signal output pin pairs (1-normal close, 2-
common) or (2-common, 3-normal open) on the Signal connector to the input signal pin pairs of
an Signal connector on another ZyXEL Switch.
2 When daisy-chaining further Switches ensure that the signal output pins you use are the same as
those you used when connecting to the first switch, as shown in the diagram below.
Figure 17 Daisy-chaining an External Alarm Sensor to Other Switches of the Same Model
12311 10 45698710
Door Open
Sensor
Spring
Clip
Signal
Connector
Signal Input Pins
Signal
(Dry contact,
Output
Pins
normal open only)
12311 10 .........
12311 10 .........
12311 10 .........
Pin Assignments