Wiring Hunter Mini-Clik Rain Sensor to Rain Bird ESP Controller

Connect Hunter Mini-Clik rain sensor to Rain Bird ESP 8-station controller.

Simple 2-Wire Connection

1. Open controller, locate SEN terminals (top left, two screws with jumper wire)
2. Remove jumper wire
3. Connect one sensor wire to each SEN terminal
4. Polarity doesn't matter (switch contacts)

That's It

Sensor opens circuit when wet → controller pauses watering. No power needed for sensor. Works with any brand sensor/controller using standard 2-wire interface.