The Wireless Rain-Clik™ transmitter is designed to operate up to ten years with it’s sealed, maintenance-free battery. The transmitter is available as a replacement part. (WRCLIK-TR) Should you need to change the transmitter, the receiver will have to learn the new transmitter address.
To check the status of the battery in the transmitter, press and hold the quick response spindle at the top of the sensor. Within a few seconds the LED light on the bottom of the sensor will briefly flash. Release the spindle and the LED light will flash again. If the LED flashes, the battery in the transmitter is good.