The CM-ENS.13S belongs to the CM liquid level
monitoring relay range. It operates with a rated control supply voltage of
110-130 V AC and 220-240 V AC and has a 1 c/o (SPDT) output with contacts rated
at 250 V / 4 A. It monitors liquid levels of conductive fluids and protects
pumps against dry running or tanks against overflow and works according to the
open-circuit principle. The sensitivity can be selected via front-face
potentiometers. Several electrodes and a sealable transparent cover for
protection against unauthorized changes are available as accessory. The device
offers screw connection technology with double-chamber cage connection
terminals.