Multifunctional Ultrasonic Water Tank Liquid Level Meter With Temperature Sensor Water Level Time Display Low Battery Indicator        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 Specifications: 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& 8451;~50& 8451; Water tank temperature range: -40& 8451;~60& 8451; 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. To set the temperature unit: The temperature unit flashes. Press +/MAX/MIN or -/Tank to select temperature unit °C or °F. After setting the temperature unit, press the SET key to set the unit of the water level in the water tank. The unit for setting the water level of the water tank: The tank water level unit flashes. Press +/MAX/MIN or -/Tank to select meters or feet as the unit for tank water level. After the water level unit is set, press the SET key to exit. Alarm setting: In normal display mode, press the ALARM key, the previously set time alarm will be displayed. Press the SET button for 3 seconds to set the hour alarm, the hour alarm will flash. Press the +/MAX/MIN or -/TANK keys to increase or decrease the hourly alarm. After the hour alarm is set, press the SET key to set the minute alarm. Press the +/MAX/MIN or -/TANK keys to increase or decrease the minute alarm. While the alarm hour or minute is flashing, press the ALARM key to enable or disable the alarm time. Package Included: Receiver *1 Transmitter*1