- The SENSE S2 device comes with a float ring allowing it to be used in above-ground pools and spas.
- The SENSE S2 when used in hot tubs or above-ground pools must be used with the float ring to prevent damage to the SENSE unit.
- The SENSE S1 cannot be placed in the pool to float on the water. Doing so would allow water to enter the device and short out the device electronics.
- The SENSE S1 must be placed in a pool skimmer.