When the sensor's two probes detect the presence of liquid the fully enclosed circuit causes a reed switch contact, rated at 100Vdc.0.5A.10VA. to close and make a circuit. The switch contacts will remain closed until the liquid drains away from the two sensor probes.
The sensor is fully protected from the ingress of liquids but is designed as a detector and should be normally kept dry. Liquids should be non-corrosive and in a temperature range of +5 to +80DegC. The plastic case size is 43mm.x12mm.x10mm. with two fixing slots and 1.8 metres of two core insulated cable for easy fitting to an audible alarm or control system.