The Rex Plus Barking Dog Alarm is easy to set up: just plug it in and adjust the sensitivity and volume control knobs. The closer the intruder approaches, the faster the barking. This electric watchdog alarm is great for homes, RVs, shops, offices. The Rex Plus Barking Dog Alarm emits the sound of an angry dog to deter intruders. If you thought a vicious dog was waiting for you behind the front do
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