The Standard and WiFi Sensor Switches wire the same way on a 24-volt AC control circuit. Know where power ends and the control circuit begins before you land terminals. Keep a copy on the truck.
Four wires exit the main housing toward the bottom of the sensor. The control pair (Safety Input and Safety Common) connects to the AC unit safety circuit. The power pair (Hot and Common) connects to the 24V AC source. Wire jacket colors may vary. Follow the terminal functions shown.
Installing the WiFi Sensor Switch? Wire it the same way, then follow the Sensor setup guide for the rest of its setup.
Important safety instructions
- Turn off power before installation.
- Confirm all connections are tight, insulated and wired according to the diagram before powering the system.
Wire harness diagram
Download the full diagram (PDF)
This wiring diagram is for a 24-volt AC control circuit.
4 wires exit the main housing toward the bottom of the sensor.
- Control pair → AC unit safety circuit(Safety Input + Safety Common)
- Power pair → 24V AC power source(Hot + Common)
Control (24V AC)
Connect the control pair to the AC unit safety circuit as shown.
AC Unit Control Circuit
Condensate Overflow Safety Circuit
Power (24V AC)
Connect the power pair to the 24V AC source as shown.
24-Volt AC Power Source
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