Features: Voice-activated automatic induction of dog barking. No manual operation is required, it can work normally without leaving home, and it is easy to use. Adjustable sensitivity. Adjust the appropriate sensitivity based on the barking of the dog. It is recommended to increase the sensitivity when you just use it, and the machine responds quickly. First warning and then current punishment, humanized correction. The dog barking machine will first issue a prompt tone. If you hear the bell and stop barking, you will not be subject to the current penalty. If you ignore the prompt and continue to bark, the machine will punish it after 3 prompts, so that the dog understands that there is a penalty for barking, so as not to avoid it. Stop barking and gradually get into the habit of not barking. The current of the bark plug can be tested by hand, which is safe and will not harm the dog. Rely on sudden stimulation to frighten the dog, realize that barking will be punished, and achieve the purpose of correcting barking. Automatic sleep and power-off protection. When the battery barks for a long time, the dog barking triggers the machine to automatically shut down and sleep for 1 minute after 5 consecutive discharges, to protect the dog, and automatically restart after 1 minute, which is convenient and safe.