Wireless indoor&outdoor waterproof transmitter

Features:    
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 and no water leakage.
Specification:
1. Indoor temperature: 0°C to +60°C
2. Outdoor temperature range:-40°C to +60°C
3. Temperature accuracy:±1.0°C.  
Power consumption:
Receiver: 2xAAA 1.5V Alkaline batteries(not include)
Transmitter: 1.5V 2xAA Alkaline batteries(not include)
Battery life: Minimum 12months for base station                    
                  Minimum 12months for transmitter
Dimensions(HxWxD):119*74*21(mm)