Keep an eye on your outdoor water tank from the comfort of your own living room, Standard is 15m cable(can lengther it as need). The ultrasonic liquid level sensor is installed on the top of the water tank to measure the water level. You can hang the display unit on the wall or put it on the kitchen workbench, table or desk. Check the liquid level indoor or outdoor. it has Alarm Function in full and empty (Set the tank's height and Alarm Level in need)
