Hydro-Rain’s HRC 100 hardwire rain sensor is designed to save water and limit damage to foliage by turning off sprinkler systems during rainy weather. A must have for every sprinkler system the HRC 100 Rain Sensor is easy to install and will provide years of reliable, accurate performance. Constructed of heavy-duty, UV-protected ABS, aluminum mounting bracket, and heavy-jacketed wire, the HRS 100 is the right choice for your sprinkler system.