PetSafe Outdoor Dog Bark Deterrent

Are you the owner of a chronic barker - or a neighbor to one? Modeled to look like a birdhouse, the bark controller is battery-operated and has three settings plus a test option. PetSafe's ultrasonic outdoor bark control unit looks like any ordinary birdhouse that can hang in a tree, on a fence post or anywhere outside.Features: Range: Up to 50 feet 3 range settings Durable and weatherproof Two-color LED for good/low-battery indication Uses 9v alkaline battery (not included)