WT0124 Wireless Floating Swimming Pool Thermometer with Solar Power Solar power;Water temperature;Indoor temperature.Max/min record of indoor and water temperature. Transmitter dive up to 30m and no water leakage. Waterproof and floating Outdoor transmitter;wireless receives 3 outdoor transmitter. Calendar from 2000 to 2099;Time alarm with snooze. 433MHZ Transmission distance up to 100meters in open field.