The wet switch flood detector is a solid state control designed to help prevent flooding, damage to carpets, walls, furniture, ceilings, etc. It now has a built-in test and reset button for easier installation. It turns the system off when moisture due to condensate or drain leaks is detected. One or two drops will cause Wet Switch to turn off a unit, alerting a serviceman to a moisture problem. A lit LED indicates the Wet Switch is activated and has turned the unit off. Reset simply by drying the absorbent pad with a paper towel and pressing the reset switch. Connects to 24 VAC. More than one unit may be connected to a system. 2 amp contact rating. Simple 5 wire installation. The Wet Switch is placed into the secondary drain pan a normally dry pan. If the primary drain pan fails, condensate water will overflow into the secondary drain pan. Upon sensing moisture, the Wet Switch will turn the system off (typically the cause of the condensing water) to help prevent damage to carpets, walls, woodwork, ceilings, and other property. The Wet Switch is designed to interrupt the operation of cooling systems. However, it is a water activated switch and can be used in a variety of other applications. Features: Hydrophilic Pad A high tech polymeric fiber quickly draws water into the sensor array using proven capillary technology. Integral Feet Integral feet raise the hydrophilic pad and sensor array off the drain pan slightly to prevent nuisance tripping and pan corrosion (metal pans only) from interfering with the sensor array. Stainless Steel Sensor Array A high tech array of multiple stainless steel sensors detects even a minimal amount of water drawn into the hydrophilic pad. Compact Package This technology is packed into a 35/8" diameter by 11/4" high cylinder. Furnished complete with 5conductor 22AWG stranded cable, 6' long. Solid State Electronics Proven electronics prevent mechanical failure in an aggressive operating environment.