How does the Sensor communicate with the Valve Controller? June 15, 2022 21:24 Updated The Sensor and Valve Controller communicates using 433 mHz RF radio. It does not use wifi or bluetooth. Related articles Do I need an extra Antenna extension? Does there need to be a check valve on the supply line? Can I have multiple LevelSmarts within the same area? What power does this unit require? Can I use there LevelSmart with an negative edge pool?