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 Can I use there LevelSmart with an negative edge pool? What do the LevelSmart LEDs indicate? Do I need an extra Antenna extension? Can I have multiple LevelSmarts within the same area? What power does this unit require?