anti barking device, latest ultrasonic dog barking deterrent device, upgrade mini sonic dog bark control device 50 ft range bokang <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