<b>【Item Description】</b> <br></br>Excessive barking can cause a real strain on your relationship with your pet, as well as cause disruptions in your neighborhood. <br></br>This product is an aid to barking cessation. Within 50 feet control , it would make sound which can only be heard by the dog to deter nuisance barking. <br></br>It won’t hurt your dog but train it efficiently. Without need of traditional collar is safe for the most varieties of dogs. <br></br><b>【Item Functions】</b> <br></br>Four levels of operation including a test mode.Switch with 4 Levels of Operation: <br></br>Test-used to verify the microphone and speaker are functional <br></br>- 1=Low Range-up to 15 feet <br></br>- 2=Medium Range-up to 30 feet <br></br>- 3=High Range-up to 50 feet <br></br><b>【How It Works】</b> <br></br>1.When the outdoor bark control is within range of a barking dog, an internal microphone pick up the sound and the unit is automatically activated. <br></br>2.The outdoor bark control emits an ultrasonic sound. (the ultrasonic sound can be heard by dogs but is silent to humans.) <br></br>3.Startled by the high-pitched sound that is safe and effective, the dog should stop barking, it will associate its bark with this unpleasant noise. <br></br>4.When the dog stops barking the ultrasonic sound also stops. <br></br><b>【How To Test It】</b> <br></br>1.Adjust the knob to "TEST" button. <br></br>2.Place the item to a position which is one arm's length away from you. <br></br>3.Whistle to the microphone of the item loudly,if the LED blinks Green,and you can hear beeping noise,then the item work properly. <br></br><b>【How To Use It】</b> <br></br>1.Pull the battery door open, Insert the 9-volt battery. <br></br>2.Place the Outdoor Bark Control facing the dog and within range of the dog. <br></br>3.Turn the Mode Switch to 1/2/3 button as needed. <br></br><b>【Package Includes】</b> <br></br>1 x New Outdoor Bark Control <br></br>1 x English Manual