Check your room's temperature, tank temperature and water level. You can store min/max records and set alarms for specific water levels (high/low) or when empty. This meter allows you to know the state of the outdoor water tank without leaving living room. You can mount it on the top of your water tank, the meter can measure the precise temperature with an ultrasonic sensor. Transmission range up to 100m (free field), Weight: 1.53000809828 pounds, Manufacturer: Wesafrae