The CM-ENS.31S is a relay from the CM family for level monitoring and level control. The rated control supply voltage is 24 - 240 V AC/DC. Output: 2 changeover contacts (250 V / 4A). It monitors and controls levels and mixing ratios of conductive liquids. It is used for filling and emptying applications, for dry-run protection of pumps and for signaling the status of the monitored level. The sensitivity and the operating principle can be adjusted using potentiometers on the front. In addition, the delay time, selectable time functions: switch-on delay or switch-off delay, can be set from 0.1 to 10 s. Various electrodes, as well as a sealable transparent cover to protect against unauthorized adjustment of the settings are available as accessories. The device is available with double-chamber box screw terminals or push-in terminals.