Panasonic KX-TDA600

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
186 Installation Manual
2.8.4 EIO4 Card (KX-TDA0164)