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Rex Plus® II Electronic Watchdog

Rex II, the electronic watchdog alarm, never needs sleep, a walk, food or water, yet is always on duty guarding and protecting. In addition to the choice of a ferocious dog(s), Rex II also offers a siren or greeting announcer. Rex II is versatile and provides an excellent way to deter burglars, without the annoying problems of owning a real dog. With his electronic radar eyes, Rex II can "see" through thick doors, walls and glass. Once his cord is plugged into any standard 110 VAC electrical outlet (or install six C batteries), he'll stay on duty around the clock.

When Rex II detects movement, he starts to emit the sound you have selected. The closer the intruder gets, the more frequent the barking becomes. As the intruder backs off, the barking decreases in frequency, stopping completely when movement is out of range.


  • Barking dog alarm.
  • Provides an excellent way to deter burglars.
  • The closer the intruder gets, the more frequent the barking becomes.
  • Controls at the top for easy access.
  • Power by plugging into a standard electrical outlet or with six (6) C batteries.
  • Voice messages or prompts:
    • "Warming up" when power is applied
    • "Armed" after warm up cycle is complete
    • "Growl sound" when unit is muted (for dog sounds only)
    • "Armed" when coming out of mute
    • "Please replace batteries" at power up or after mute button is pressed
    • Sound selection switch to choose: Dogs, Greetings or Sirens
      • Dog 1 Dog 2 2 Dogs together
      • Ding Ding Dong Chirp
      • Siren 1 Siren 2
  • Speaker and batteries located low in the unit for stability.
  • Water resistant flip top provides convenient access to the controls.
  • Detection range: adjustable up to 26 feet (range reduced through obstructions).
  • Detection angle: 150 degrees.
  • Limited 90 day warranty.