Anti-Bark Ultrasonic Dog Bark Deterrent Features: Effective Range: Up to 75 feet depending on the setting. Multiple Settings: Designed with adjustable range settings to accommodate various situations. Multi-Directional Microphone: Picks up barking dogs from any direction. Modes: Mode 1: Low range (up to 25 feet). Mode 2: Medium range (up to 50 feet). Mode 3: High range (up to 75 feet). Safety and Friendliness: Safe for Animals and People: Proven harmless to humans, animals, and plants. Sonic Frequency: Precise frequency that may be inaudible to humans. Training and Learning: Learning Period: It may take up to 2 weeks for the dog to associate the ultrasonic noise with the need to stop barking. Ease of Use: Mounting Options: Easy to mount on a wall, hang on a tree, or place on a fence post. Setup: Simple setup process for quick and easy use. Durability and Weather Resistance: Durable Construction: Built to the highest quality standards for long-term use. Weatherproof: Suitable for outdoor use in any weather conditions.