How it works:
When the outdoor bark control is within the range of a barking dog, an internal microphone picks up the sound and the unit is automatically activated. The outdoor bark control emits an ultrasonic sound. The ultrasonic sound can be heard by dogs but is silent to humans. Startled by the high-pitched sound that is safe and effective, the dog should stop barking, as it will associate its bark with this unpleasant noise. When the dog stops barking the ultrasonic sound also stops. The outdoor bark control has 3 range levels and a test mode. It is effective up o 50 feet.
Note: If the dog is deaf or hearing impaired, he may not react to the outdoor bark control.

Features:
Use ultrasonic sound to deter unwanted barking.
Detects barks up to 50 feet with the use of an internal microphone.
4 levels of operation including a test mode.
Durable and weatherproof for outdoor use.

Specification:
Size: 16cm x 13cm
Power Supply: 9V 6F22 Battery (Not-Including)
Microphone: used to detect barking
Sound activated speaker: produces the ultrasonic sound
Switch with 4 levels of operation:
OFF-used to conserve battery life
Test-used to verify the microphone and speaker are functional
1=Low Range-up to 15 feet
2=Medium Range-up to 30 feet
3=High Range-up to 50 feet
Battery Door: used to enclose the battery

Installation:
The outdoor bark control should be placed facing the dog and with the range of a dog. The unit is designed with provisions for hanging and should be positioned at a height of no more than 50 feet. The outdoor bark control can also stand alone. It can be placed in a tree, hanging from a pole, on a fence post, etc. For best results, the area between the outdoor bark control and the dog should be free of any obstacles.