Water Level Sensor with Relay Output, 12 V DC

A water-level sensor for tanks, water heaters, ponds, pump rooms, warehouses and archives. When water reaches the probe, the controller's relay switches, so you can stop or start a pump or trigger an alarm. It offers normally open and normally closed outputs; the supplier rates the relay contacts at 250 V AC 10 A or 30 V DC 10 A. The controller works at 10 to 15 V DC, under 100 mA. In the photo: a white controller box and a separate probe joined by cable. Intended for installation by someone familiar with low-voltage wiring.