Description: 1. Type: Electronic thermometer and hygrometer 2. Low temperature alarm (the temperature will be lower than the preset value will give an audible alarm). 3. Indoor temperature range: 0 °C to +60 °C. 4. Outdoor temperature range: -40 ° C to +60 ° C. 5. Accurate temperature: 1.0 6. Power supply (host): 2x7 battery 7. Power supply (slave): 2x5 battery 8. Wireless range: no interference 100 meters
