Sophisticated Ultrasonic Sensor: This tabletop or wall-mountable gadget monitors tank liquid depth accurately. It also features a 10-elements LCD bar graph to provide you a visual representation of how much liquid remains in your tank. This helps you plan for refills in advance and prevent unnecessary interruptions. Exceptional Functionality: Our ultrasonic level sensor with its capacity to keep min/max records of tank liquid level. It also comes with 12/24H time switch function and alarm clock feature. It displays indoor temperature (C/F) and tank temperature (C/F) simultaneously, making it a versatile addition to your home. Reliable Alerts: The sensor supports high/low tank liquid level alarm and a tank liquid empty alert. This way, you don't have to worry about checking the tank frequently. The device will notify you when the liquid level gets too high or too low, thus preventing potential property damage and unforeseen expenses. Energy-Efficient and Waterproof: The sensor's transmitter is solar-, offering low power consumption and low battery alert for seamless operation. It also sports an IP65 waterproof rating, making it and safe for outdoor usage. The open distance . 100M /328.1ft and effective distance . 30M/98.4ft Automatic Control: The sensor enables you to control your water pump and automatically refill the tank when water level falls below a certain threshold. You can adjust this threshold as per your specific needs. The low water level display lets you know when it's time to refill your tank, ensuring continuous, hassle-free water supply in your premises. Material: ABS colour: White Package Contents: 1 x receiver 1 x transmitter 1 x controller 1 cord Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.