General description This USB rechargeable anti-bark device is designed to help control excessive barking in dogs of all sizes. Utilizing ultrasonic sound frequencies that are inaudible to humans, it effectively calms dogs and discourages unwanted barking behavior without causing harm or irritation. Technical specifications Material: ABS Frequency levels: 15-30 kHz for large dogs, 20 kHz for medium dogs, 30 kHz for small dogs IPX4 rain protection Compatibility and accessories Includes: 1 Anti-Bark Device Control 2 Mounting Screws and Anchors 1 USB Charging Cable 1 User Manual Installation Can be hung on trees, walls, or fence posts using the portable hook Recommended height for placement: more than 1.5 m Usage Operates on 3 adjustable sensitivity and frequency levels LED indicator shows operational status: blue light flashes every 6 seconds, red light stays on for 3 seconds when barking is detected, red light flashes when battery is low Adjust frequency weekly to maintain training