General description This 50ft Effective Dog Anti Bark Device is designed to help control excessive barking in dogs using ultrasonic sound. Suitable for dogs aged 6 months and older, it operates effectively within a range of up to 15 meters (50 feet). This device is safe for most dog breeds and does not require a traditional collar, making it a convenient option for pet owners. Technical specifications Range: Up to 15 meters (50 feet) Adjustable working frequency: 0 to 9 Ultrasonic levels: Intelligent mode and three manual settings (high, medium, low) Waterproof and durable for outdoor use Other information LCD display to monitor device operation and battery status Intelligent voice recognition system to filter barking sounds and reduce false triggers Compact design for easy hanging on trees, walls, or fence posts Three operational buttons: stop, auto, and level adjustment