Description ultrasonic Anti-bark effective barking stop FF -AAJJ11 Product Information: Brand Name: OIMG Item Type: Dog Repellents Origin: CN (origin) Type: Dogs Product Description Turn off the device To turn on the device, press the "power" button for 3 seconds, and the beep, the digital display flashes green, and then disappears. To turn off the device, press the "power" button for 3 seconds down. It makes two beeps and turns off. The perfect training tool do stop unwanted barking and develop good manners so you can have a moment of peace and quiet. 4 sensitivity modes and 3 frequency modes 1 15KHz Level Ultrasonic Frequency, 1 Digital Display with 6 Seconds 2 20KHZ level ultrasonic frequency, 2 digital display with 6 seconds Level 3-Ultrasonic Frequency 30KHz, Digital Display 3 with 6 Seconds Level 4-emit ultrasonic frequency automatically 1-3 level different tones ultrasonic frequency 6 seconds duration, digital display. Warning 1. Charge the device completely before the first use. 2. The barking of the psa is directed towards the sensor. 3. Suitable for most dogs. 4. Each dog ma different learning speed, let your dog train do 2 weeks. Package includes 1 x Ultrasonic Bark Control 1 x User Manual 1x USB cable 2 x Fastening Screws and Anchors