Pros, Join Our TradeMaster Program!
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. Re-set 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.

  • 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 3-5/8" diameter by 1-1/4" high cylinder. Furnished complete with 5-conductor 22AWG stranded cable, 6' long.
  • Solid State Electronics
    Proven electronics prevent mechanical failure in an aggressive operating environment.
  • Double Throw Relay
    Allows for wiring to interrupt system and to sound an alarm (by others) when moisture is detected.
  • Multiple Unit Connectivity
    Multiple unit connectivity allows for multiple Wet Switches to be connected in series to adequately cover large drain pan areas.
  • Standard 24VAC control
  • Epoxy Encapsulated Electronics
Read more
Manuals (1)
Product Type:
Flood Detector
Contact Ratings:
2 Amp
Includes 5 Conductor 22 AWG Stranded 6' Cable
Diameter (Inches):
Speak with a real person who will go out of their way to help!
Open Now:
Monday – Thursday
8am–7:45pm ET
9am–7:45pm ET

10 Product Reviews

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.