["brand new and high quality Description:\r\nThe dog is our friend, but sometimes its barking is bothering us. Unexpected barking often disturbs neighbour. How do we let our dogs become more gentle?\r\nThis is the New Humanely Ultrasonic Anti No Bark Control Device Stop Dog Barking Silencer Hanger, which trigger the ultrasonic wave circuit work through the barking, it will sent out five seconds harsh ultrasonic wave to stop the barking. The dog will build up the conditioned for reflex after experienced many repeated the action times, the dog knew the for extra sound had been caused by its barking. Afterward the dog wound not bark without reason. In generally, this product will trigger after more than three times barking. With this product, you will liberate from the annoyed barking, and will create a quite environment for you Features:\r\nHumane solve dogs' barking problems\r\nMaterial: Hard plastic\r\nPower Supply: for DC 8.4V,500mA\r\nPower Adapter Input Voltage: AC 100V~240V\r\nAdapter Plug: US Pin\r\nSize:12.6 x 7 x 4.5 cm\r\nColor: As the pictures shown How to use it:\r\nPlace the item 1~2 meters far away from the kennel, note keeping from the rain and humidity, assuring people can not access easily\r\nDrilling holes on the wall according to the wall mounting plate, and then insert the plastic base and fitting wall mounting plate using the screws\r\nA power socket is be needed around this item\r\nAdjust the item's direction to the dog activity area\r\nPlug the adapter, turn on the item, completed Note:\r\nDo not install in damp, leaking sunlight and easy to encounter a place\r\nIf there is the great noise in the around environment, and the noise last long for time. Highly suggest that you had better not use this product, the noise environment will affect this product’s using life\r\nNote: Adjust the sensitivity: Using the slotted screwdriver from the back of the hole,Clockwise to turn it the sensibility will be high, otherwise counter-clockwise will be low\r\nQuantity:1 Set\r\nNote: Due to the difference between different monitors, the picture may not reflect  the actual color of the item. Thank you!"]