For site adjustable liquid level control points on aqueous liquids, this four electrode probe is mounted on the tank top. Electrodes are cut to length on site to define a) high or low level alarm, b) pump "on" level, c) pump "off" level or similar functions, with the last electrode left as the common or earth. Electronic output is then made using relay module RLM48T, with simple electrical connections to the terminal head.

• Tank level control for any conducting liquid
• High level alarm
• Low level alarm
• Dual point pump control