Some motion-activated dog barking detectors include the Electronic Barking Secure Watch Dog, the Safety Technology International ED-50 Rex Plus Electronic Watch Dog and the Barking Dog Alarm. Each detector is available for less than $100 as of 2015.
The Electronic Barking Secure Watch Dog offers 24-hour protection with radar sensitivity adjustable from 10 to 20 feet. Realistic barking sounds become louder and more frequent as an intruder gets closer. This detector can sense movement through glass, walls and doors. It features alarm and chime options in addition to barking sounds.
The Safety Technology International ED-50 Rex Plus Electronic Watch Dog allows a consumer to choose between four settings. This device plugs into a standard outlet and provides 24-hour protection. When it detects movement, it triggers an audio sample of an angry, barking watch dog. This portable device works in homes, RVs or businesses.
The Barking Dog Alarm can emit either barks or a siren. This device has an alternate mode that emits tranquil rain forest sounds. The Barking Dog Alarm features a 30-foot detection zone adjustable with a sensitivity dial and projects 100 decibels of protective barking that becomes more frequent and louder as a visitor or intruder gets closer.