Electronic Water Detector  662 series ( Low Power ) are small electronic control relays for detecting a rising water level. Inside a waterproof enclosure they have a medium power relay, which are operated by water reaching the trip level, using a stainless steel sensor SR587 and can be used to control alarms or other control equipment.  When water rises up the side of the box , the relay is energized. This sequence is failsafe, allowing each model to be used as a water spillage alarm switch or to turn off a valve or stop an air conditioning unit before the water overflows its containment.  Used in HVAC applications

FEATURES Small enough to be used in restricted spaces Water detection with accurate switching level Stainless steel sensors SR587 930660  Size:  3.2 x  2 x 1.5  inch  (82 x 50 x 38 mm) 930662 Size:  4.5 x 3 x 2  inch, Stainless steel sensor 48 inches (122 cm ) control wire All components encapsulated against moisture ingress Switch-off height 0.40" (1.0 cm) Switch-on reset 0.31" (0.8 cm) Switching capability 5 amps at 250 VAC Power:   24 VAC or VDC 1.Watt  ( standby 7 mA)

Wiring Diagram