The MADISON R2 Series is a liquid level controller. This device caters different levels of controls; it can be in a high level, low level or bi-level that comes with an octal plug-in package. The R2 Series is usually used for pump-up or pump-down operations. In addition to the said features, this liquid level indicator is equipped with a dual probe level detection and has a solid state circuitry that is coated to provide moisture protection. It also has an electromechanical relay output that is used for isolation and reliability. Moreover, this device is characterized as a factory-fixed or adjustable device that enables it to be sense resistant.