Automatic "liquid level control system" includes a pair of SXL liquid level sensors, a 120V outlet relay, a power supply and wiring kit. Simply install the high and low set point sensors, connect the power supply and relay as shown in the manual. Sensors install with 1/4" NPT threads or included o-ring and nut allowing installtion in curved or thin flat walled tanks. LSM mounting kit allows sensors to be installed from the top of a tank with adjustable positions. Outlet relay and sensors operate on low voltage 24Vdc and can switch up to 12A 120Vac loads such as pumps or valves.

Electronic optical liquid sensors are durable, have no moving parts and are easy to maintain. LED illuminates body to indicate when they are activated. Other intelligent functions include "stable state" switching to detect splashing, one-second output debounce and error indication. Highly reliable and accurate solid state electronic optical level control system.

Fill Kit: The low-level sensor turns on the relay to operate until the high-level sensor is activated.

Drain Kit: The high-level sensor turns on the relay to operate until the low-level sensor is activated.