background image

Wet Switch prevents flooding and property damage by detecting moisture 

caused by accumulation of air-conditioning condensate, drain leaks, etc. When 

moisture is detected, the normally closed circuit controlling the system is 

disconnected. An additional circuit is included, normally open, that may be used 

to operate an alarm device as well.  Multiple Wet Switches may be connected in 

series (within the electrical limits of the power supply), to expand coverage area.  

Wet Switch incorporates isolated relay contacts, for added flexibility in 

installations with electronic control boards where breaking one lead from the 

transformer is not possible.

Status Indications & Operation

Normal State:  When power is applied and no moisture is detected, the 

“POWER ON” LED will be lit green, and the “MOISTURE” LED will be OFF.
Pressing 

TEST

  button simulates moisture detection and confirms proper 

function of Wet Switch. “MOISTURE” LED will be lit red, & “POWER” LED will be 

OFF.
Press 

RESET

 button to return Wet Switch to normal state.

When moisture is detected, the control circuit is opened, and the “MOISTURE” 

LED is lit red.  Wet Switch will remain in this state until the problem is corrected 

and the 

RESET

 button is pressed, or power is disconnected.  After correcting 

the moisture problem, & with power disconnected, use a clean, absorbent cloth 

to thoroughly dry the sensor pad on the bottom of Wet Switch.  Any residual 

moisture in the pad may cause a false detection.  A warm air device (such as a 

hair drier on low heat ONLY) may be used to help dry the pad.

Installation

1. Turn off power to the system.

2. Place Wet Switch, padded side down, on the surface to be monitored.

3. Connect wiring as shown in the diagrams on page 2.  Wires may be

  extended as necessary, but avoid excess run lengths.

4. Restore power to the system.

5. Press “TEST” to assure proper function.

Controlling Selected Components

System components such as compressors, electric valves, condenser 

pumps, chill water pumps, or other 24 VAC controls may be connected 

selectively and independently 

to Wet Switch.  

LED Indicators
Wet Switch

Schematic

TEST & RESET

Buttons

800.995.2222

www.diversitech.com

CONDENSATE MANAGEMENT

Installation Instructions

Wet Switch

WS-1

®

®

CONTACTS

RED

BLACK 

ORANGE 

GREEN 

WHITE 

PUSH

TO

TEST

PUSH

TO

RESET

24 VAC

POWER ON

MOISTURE

CONTACTS

CLASS II

CIRCUIT

240V

3A MAX

POWER

CLASS II

CIRCUIT

2.0 AMPS

MAX

Wet Switch

®

 Flood Detector

MODEL NO. WS-1

SEE USER GUIDE

FOR WARNINGS

Wet Switch

®

 is a registered trademark

of DiversiTech Corp.

0421

Plenum Rated

Reviews: