OpenSprinkler › Forums › Hardware Questions › OpenSprinkler › Water Level Sensor › Reply To: Water Level Sensor December 7, 2015 at 9:29 pm #40943 mgglimParticipant Thanks Ray. That might just work out well for me. Since the controller is the DC type, would the sensor need to be DC? What would the voltage need to be? Sorry, this is very new to me.