The WD100 is a microchip-based device that uses gold-plated sensing probes to detect the presence of water or other conductive liquid. The WD100 is powered by an AC or DC source, 14 - 30 volts. It features normally open and normally closed (form C) relay contacts rated at 5@ 120 VAC/30 VDC for connection to a monitoring system, or direct control of another device. The mounting legs will allow a sensing height adjustment from 0" to 1/2". The WD100 is designed to signal an alarm if one or more of the three conditions are met: water is detected, power

is lost to the unit, or if there is an internal failure. The WD100 provides the highest level of water detection confidence.

The following chart gives examples of what types of fluids the WD100 can and can not be used to detect.

Fluids that can be detected Fluids that can not be detected
City water Pure water
Sea water Gasoline
Copper sulfate solution Oil
Weak acid Brake fluid
Weak base Alcohol
Household ammonia Ethylene glycol
Water & glycol mixture Paraffin
Wet soil Dry soil
Coffee Whiskey

Power supply: 14 - 30 VAC/DC
Supply Current: 60mA max @ 24VDC, (no water)
Operating Temperature: -40C - 85C (-40F - 185F)
Enclosure Dimension (LxWxH): 127 x 127 x 102 mm
(5-3/8" x 5-3/8" x 4" (min)
(mounting legs@ max/min height): 127 x 127 x 89 mm
(5-3/8" x 5-3/8" x 3-1/2" (min)
Alarm Output: Form C relay, rated @ 5 amps
@ 120 VAC/30 VDC
(resistive load)

  • Fail-safe circuitry
  • Reverse acting contacts
  • Reverse voltage protection
  • RFI/EMI noise immunity

  • WD-100