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External Sensor
Power to the external sensor is provided from the EIO4 card and must be grounded through the EIO4 card as
indicated in the diagram below. A pair of "sensor" and "common" lines are connected to the EIO4 card for each
external sensor. The PBX detects input from the sensor when the signal is under 100
W
.
Connection Diagram
External Sensor
sensor
common
I/O
EIO4
OPB3
PBX
+5V
+5V
10K
33
33
4.7K
4.7K
External Relay
Current Limit: 24 V DC/30 V AC, 1 A maximum
Installation Manual
197
3.9.4 EIO4 Card (KX-TDA0164)