LEIGAO How to use it: Put the items 1-2 meters away from the kennel, pay attention to rain and moisture, and ensure that It's not easy for people to get in. Drill the mounting plate into the wall according to the wall, then insert the plastic base And use the screws to install the wall mount plate. This project requires an electrical outlet. Orient the item to the dog's active area. Plug in the adapter, open the project, and you're done. feature: This anti-bark device will trigger the second bark after more than three times, effectively filtering out some false triggers Caused by ambient noise or occasional barking by dogs. Voice control design, install on the wall, simple Install. Equipped with a swivel ledge that enables the device to rotate freely 360 degrees. Humans can't hear ultrasonic waves, no harm to humans and dogs, and can be used safely. Note: Device performance will be affected Barking affected by ambient noise, working distance and volume. Specification: Type: Anti-Barking Device Material: ABS quantity: 1 Product color: as pictured Power supply: DC 8.4V, 500mA EU plug Power adapter input voltage: AC 100V~240V box: 1*Anti-bark device 1*Accessories set