The Yard Sentinel Ultimate Ultrasonic Animal Pest Repeller by Aspectek offers an advanced, ultrasonic outdoor pest-repellent solution. The adjustable ultrasonic dial allows you to target specific outdoor pests like raccoon, deer, skunk, mice, squirrels and more. An adjustable PIR infrared motion sensor with nighttime scanner technology allows you to adjust your own inaudible high pressure ultrasonic sound wave to your target pests. An adjustable sonic alarm is perfect for deterring pests or intruders. Unique Intelligent Power System (IPS) technology, saves energy for DC battery and provides longer usage. IPS also offers an uninterrupted power system that guarantees the products activation for a short time even if the AC fails. The unit is equipped with an advanced PIR motion detection sensory system that senses motion from all directions up to 45 ft. When the unit detects an intrusion, it responds by emitting a high frequency 120-decibel sound blast to deter the trespasser. Ultrasonic blasts in the upper end of the frequency range are intolerable to the aforementioned animals. The Yard Sentinel features a sturdy, weather-resistant design, intelligent power system (which switches to backup battery in the case of power failure) and is easy to mount for maximum effectiveness. Offers up to 5000 sq. ft. of coverage.