Is the LevelSmart Sensor completely wireless? June 15, 2022 21:29 Updated Yes, the Sensor is 100% wireless and discrete to be out of sight and out of mind. Related articles What power does this unit require? How does the LevelSmart Sensor attach to my pool or spa? Can I have multiple LevelSmarts within the same area? Does there need to be a check valve on the supply line? How to check Valve operation after LevelSmart installation