The CLS works when the electrodes come into contact with the liquid, causing a current flow that triggers the instrument. The voltage between the electrodes is alternating to prevent electrolysis phenomena in the liquid and electrode corrosion. Specifications: – Security alarm; – Single-point control; – Power supply: 24 Vac/dc – Power consumption: 2 VA/1.8W max. – 2 SPDT output contacts – Mounting: For 35mm DIN rail.