Ultrasonic Bird Repeller uses a natural predatory principle to scare unwanted birds away from farms, orchards, gardens, yards, airport runways, helipads or any other property. The built-in PIR sensor detects movement and the powerful loudspeaker broadcasts predatory calls of the hawk, falcon, and owl species. The option of AUTO mode with a time interval setting allows the device to generate the signal every 5 – 30 minutes automatically. Ultrasonic Bird Repeller works in the daytime only when pest birds are active. This humane and environment-friendly method will solve your pest bird problem without harm to humans and other creatures. In addition, it can also deter open field rodents and rabbits. Key Specifications/Special Features :- Birds Affected • Pigeons, Crows, Sparrows, Blackbirds, Starling, other pest birds, etc. Applications • Ultrasonic Bird Repeller is easily installed to protect farms, yards, factories, gardens, landscapes, airport runways and any other properties. Specifications Dimensions: 90 x 170 x 120 m/m Power supply: 100-120VAC, 50/60 cycles Adapter: 220-240VAC, 50/60 cycles Output: 12VDC Sound: Digital recording of hawks, falcons and owls Protection Coverage: up to 1 acre (when VOLUME knob turned to maximum) PIR function: Fan shaped area of 130 degree, distance up to 30ft Features PIR function allows smaller area protection AUTO function with 5-30 minutes interval for large protection Built-in photocell disables the device when it is dark PIR function offers a daytime security to alert the possible intrusion Sounds of hawks and owls may scare outdoor rats, mice, rabbits Time Interval adjustment to control the sound emission. Built-in volume adjustment Special IC chip recording of actual predatory calls of hawks, falcons and owls