Waterbug® 800

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The model WB-800 operates on 12 or 24 Volt AC/DC (not included) and has a form C relay output that can be connected to alarm panels, bells, dialers, etc. Unit also includes internal alarm buzzer with silence switch and eight LEDs on console to identify the sensor in alarm. As many as eight supervised sensor probes can be run up to 500 feet away (or 16 non-supervised sensors). Each sensor probe has two contacts. When a film of water forms a bridge between these contacts, the unit senses this and triggers the alarm output. The sensor will not alarm due to condensation or high humidity. Four standard surface sensors are included with the unit.


  • Reliable microprocessor design
  • Versatile 12 or 24 Volt AC/DC power for operation
  • No false alarms due to condensation or humidity
  • Can monitor up to 8 supervised probes - up to 500 feet away
  • Provides (1) form "C" contact closure output for alarm
  • Internal audible alarm with silence switch
  • Easy surface mount installation
  • One year limited warranty


  • Console Size: 6.55" x 4.70" x 1" (16.6 cm x 11.9 cm x 2.5 cm)
  • Power Requirements: 12V or 24V AC or DC
  • Current Draw (resting state): 75mA @ 12V or 24VDC, or 200mA @ 12V or 24VAC
  • Current Draw (alarm condition): 125mA @ 12V or 24VDC, or 330mA @ 12V or 24VAC
  • Operating Temperature: Control and Probe 32°F to +140°F (0°C to +60°C)
  • Outputs: Form C (SPDT) 1 Amp @ 24Vac, 1 Amp @ 30 VDC (not for direct high voltage switching) and Audible alarm with silence feature
  • Recommended Dist. Between Probes & Console: 500ft (152.4 m) maximum
  • Recommended Max. Probes Per Console: 8 supervised or 16 non-supervised
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