Pool(swimming) Thermometer with RCC waterproof

Feature: 1. Water temperature; 2. Indoor temperature; 3. wireless receives 3 outdoor transmitter; 4. Max/min record of indoor and water temperature. 5. Waterproof and floating Outdoor transmitter. 6. Transmitter dive up to 30m no water leakage. 7. Calendar from 2000 to 2099 8. Time alarm with snooze;   Specitication: 1. Indoor temperature: 0°C to +70°C 2. Outdoor temperature range:-40°C to +70°C 3. Temperature accuracy:±1.0°C.   Power consumption: Receiver: 2xAAA 1.5V Alkaline batteries Transmitter: 1.5V 2xAA  Alkaline batteries Battery life: Minimum 12months for base station            Minimum 12months for transmitter   Dimensions(HxWxD): 66*120*22(mm)