Tank Alert® EZ DUO

Innovative, Indoor or Outdoor Liquid Level Dual Alarm System

tank alert ez duo

The Tank Alert® EZ DUO alarm system monitors two separate liquid levels or other contact closure in lift pump chambers, sump pump basins, holding tanks, sewage, agricultural, and other water applications.

The Tank Alert® EZ DUO indoor/outdoor alarm can serve as a high or low level alarm depending on the float switch model used. This easy to install alarm features an innovative, sleek 2-color molded enclosure which integrates the red LED translucent beacon.

The alarm sounds and the upper housing half illuminates when a potentially threatening liquid level condition occurs. The audible alarm can be silenced by pressing the Test/Silence button, but the alarm light will remain on until the condition is remedied. Once the condition is cleared, the alarm will automatically reset. A green “Power On” light indicates power to the alarm panel.

Need help picking the best alarm for your application? Try our handy interactive quiz! We also have an alarm comparison chart for quick reference.

tank alert ez duo


  • 2-color molded enclosure offers a distinct look; upper translucent half illuminates in alarm condition
  • Red LED for alarm 1 and amber LED for alarm 2
  • Removable lower cover provides greater access for easier field wiring while the internal circuitry remains protected
  • Interlocking enclosure features unique sound chamber to amplify the horn, while helping prevent moisture from entering
  • External mounting tabs for easy installation
  • Enclosure meets Type 3R water-tight standards
  • Enclosure has indicator marks on bottom for easy placement of cord entry locations
  • Automatic alarm reset, horn silence switch, and alarm test switch
  • Alarm horn sounds at 82 decibels at 10 feet (3 meters)
  • Alarm system (when installed on separate circuit) operates even if pump circuit fails
  • Green power on indicator
  • Includes auxiliary alarm contacts for easy attachment of remote devices
  • CSA Certified
  • 5 year limited warranty



  • PRIMARY: 120 VAC, 50/60 Hz, 3.8 watts max. (alarm condition)

ALARM ENCLOSURE: 6.7 x 5.3 x 2.5 inch (17.02 x 13.46 x 6.35 cm), indoor-outdoor, weatherproof, thermoplastic meets Type 3R water-tight standard

ALARM HORN: 82 decibels at 10 feet (3 meters)

AUXILIARY ALARM CONTACTS: 240 VAC / 30 VDC, 1.5 amps max., 50/60 Hz (circuit not supervised)

FLOAT SWITCH: SJE SignalMaster® control switch with mounting clamp

  • CABLE: 15 feet (4.57 meters), flexible 18 gauge, 2 conductor (UL) SJOW, water-resistant (CPE)
  • FLOAT: 2.74 inch diameter x 4.83 inch long (7 cm x 12.3 cm), high impact, corrosion resistant polypropylene housing for use in sewage and non-potable water up to 140°F (60°C)
  • MAXIMUM WATER DEPTH: 30 feet (9 meters), 13 PSI
  • ELECTRICAL: 5 amps, 125 VAC/250 VAC, 50/60 Hz



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