Chapter 3 Hardware Overview
MES3500 Series User’s Guide
32
•The Signal slot can send an external alarm on to another device. By daisy-chaining the signal
sensor cables from one Switch to another ZyXEL switch which supports this feature, the external
alarm alert (but not the system alarm) is received on each Switch.
• The Switch can be configured to send an SNMP trap to the SNMP server. See Section 40.3 on
page 303 for more information on using SNMP.
• The Switch can be configured to create an error log of the alarm. See Section 42.1 on page 326
for more information on using the system log.
3.1.5.1 Connect a Sensor to the Signal Slot
This section shows you how to connect an external sensor device to the Switch.
1 Use a connector to connect wires of the correct gauge (18 AWG or larger) to the sensor’s signal
output pins. Check the sensor’s documentation to identify its two signal output pins.
2 Connect these two wires to any one of the following pairs of signal input pins on the Switch’s Signal
connector--(4,5) (6,7) (8,9) (10,11). The pin numbers run from the right side of the connector to
the left.
2a Connect each of the sensor’s two signal output wires to the Signal connector by depressing
the spring clip corresponding to the pin you are connecting to.
2b Insert the wire and release the spring clip.
2c Repeat the process for the sensor’s other signal output wire. A total of four sensors may be
connected to the Signal connector in this way using the remaining signal input pins.
3 Insert the alarm connector into the Signal slot.
Figure 18 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.
12311 10 45698710
Door Open
Sensor
Spring
Clip
Signal
Connector
Signal Input Pins
Signal
(Dry contact,
Output
Pins
normal open only)
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