Features 1、Better for Control: Supports manual or automatic mode for the control of the water pump, with relay dry node output, and can be used on various load control. 2、Wide Compatibility: The water level controller module can be used in conjunction with various liquid level sensors, highly compatibility and very efficient. 3、Faster in Response: Thanks to the excellent workmanship, the water level controller module can give timely response in controlling your pump, very reliable. 4、Good in Protection: Equipped with waterproof pump failure protection and water level overflow detection output, the controller module will improve the safety. 5、Simpler to Install: Light in weight and compact in size as well, the pump water level module is very convenient to install within several minutes. Specification Item Type: Water Level Controller Module Module Function: 1. Automatically pump water when the water level is below probe B. 2. When the water level gets to the C probe, stop pumping. 3. The A, B and C water level detection lines can be used together with ordinary wires, with the end of the wire exposed by 5cm. Automatic pumping when the water level is below point B. Package List 1 x Water Level Controller Module