Serves for level monitoring in wells, tanks, pools, reservoirsDESCRIPTIONWithin a single switch you can choose 3 configuration:One-state monitors one liquid level ( full or empty).Two-state monitors two levels ( switches at one level and switches off at another).2 independent switches with single-state switching. You can choose between functions drain in, drain away or a combination of these two. Adjustable time delay (0,5-10s).TECHNICAL PARAMETERS Supply AC 230 V, AC/DC 24 V or AC 110 V, AC 400 V. Output contact: 2x changeover/DPDT 16 A /250 V AC1. Sensitivity adjustable by potentiometer. 3-MODULE, DIN rail mounting.