Winland WB-350 WaterBug Sensor with Surface Sensor, Buzzer



WB350 - WaterBug Sensor with Chirper

The WaterBug WB350 is a water detection device ideal for computer rooms, document storage areas, warehouses, sump pumps and basements. It operates on 12v battery and has a form C relay output that can be connected to alarm panels, bells, dialers, etc. WaterBug sensors activate the alarm when a conductive bridge is formed between 2 contacts. Low Battery Indication: The WB-350 will trip the open collector output and give an audible warning if battery voltage runs low.

The unit can monitor up to as many as six sensors up to a hundred feet away, depending on the wire used. Each sensor has surface contacts that will detect the first appearance of water forming a film on the floor. The sensor will not alarm due to condensation or high humidity.

One standard surface sensor is included with the unit.

Ideal For:

  • Residential or Vacation Homes
  • Basement Sump Pumps
  • Commercial Buildings
  • Office and Computer Areas
  • Unattended Buildings
  • Greenhouses and Animal Buildings
  • All Drain Areas
  • Sprinkler Systems

WB350 Features

  • 9V battery for stand-alone operation (approx. 1-2 Year lifespan *battery not included
  • Console includes one standard unsupervised surface sensor (W-S-U)
  • Console accepts up to 6 total sensors (W-S-U and W-UC-U)
  • Sensors can be located up to 100' (30.48 m) away from the unit for wide area protection
  • Audible Alarm: 83 dB @ 30 cm @ 9VDC, pulsed
  • Provides (1) Form C contact closure output for alarm
  • Easy surface mount installation
  • Open Collector Transistor Output (Normally Open Circuit Only)
  • Operating temperature: 32  to 140 F (0 to 60 C) non-condensing environment *indoor use only
  • Dimensions: 5 x 2.44 x 1.25
    (12.7 x 6.2 x 3.18 cm)
  • One year parts and labour; subject to conditions of limited warranty


WB350 Includes:


  • (1) x WB350
  • (1) x Surface probe unsupervised (WSU)

Water Bug 350 Manual
WB350 Placement Guide 
WB350 Quick Start Guide 
WB350 Data Sheet 


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