Product Feature: 1. Using high-quality materials, the quality is guaranteed 2. Detect the liquid level in the tank 3. Detect the temperature in the relevant area 4. The liquid level in the tank exceeds the limit alarm 5. Wide range of use Parameter: Product color: black Product weight: receiver 93g, transmitter 125g Product Size: Host: 10.5*9.3*2.5cm Emitter: 15.5*6.5*9.5cm Temperature range: 0~50 Water tank temperature range: -40~60 Common settings: Clock settings: In the normal display mode, press the SET key for 3 seconds to enter the setting mode. 12/24 hours: 12 hours or 24 hours will flash. Press +/MAX/MIN or -/TANK key to select 12 hours or 24 hours, press SET key to move to hour setting. Hour: The hour value flashes. Press +/MAX/MIN or -/TANK key to increase or decrease the hour value. When setting the hour value, press the SET key to set the minute value. Minute: The minute value flashes. Press the +/MAX/MIN or -/TANK key to increase or decrease the minute value. When setting the minute value, press the SET key to set the temperature unit. Package list: Receiver *1 Transmitter*1