From outside, it sounds like you have a very unfriendly dog inside. It also can announce visitors with a chime or alarm. The radar sensitivity is adjustable from 10-20 feet. Volume is also adjustable. Dimensions 6" x 7" x 4 3/4". Powered by AC power supply. Also takes 8 AA back-up batteries (not included) in case of power loss. Unit needs to face in the direction you want to detect motion. Detection is limited from the sides and rear. The included remote control lets you Arm and Disarm the system, as well as set off a Panic alarm. You can also connect one additional sensor (HA-MOTION or HA-SENSOR).

The Electronic Barking Dog Alarm is an effective tool to fend off burglars from your home. It is no doubt that having a dog is one of the best ways to protect your home from intruders. A dog's bark is considered worse than his bite and it is usually able to effectively keep intruders away. In most cases, it does not matter if the bark is from a little dog or a big dog. Burglars like silence and will usually want to gain access to your property undetected. A dog's bark draws too much attention and is enough to change the mind of any burglar and they most certainly won't stick around to find out whether the dog is alive or electronic.