From the Manufacturer
Humane, effective, maintenance-free electronic yard protector keeps animals away from your property without messy or expensive chemical solutions. Independent laboratory testing has proven YardGard sound technology to be a highly effective form of pest control. Use it to repel stray dogs, feral cats, deer, raccoons, skunks, rabbits, squirrels, opossums, armadillos, rodents, bats, insects and other creatures. Coverage: up to 4,000 Square Feet Uses: yards, lawns, gardens, porches, buildings, greenhouses, more! AC adapter included with 50-Foot extension cord OR may be operated with 4-C batteries in motion sensor mode.
Ultrasonic devices are safe, humane and maintenance-free yard protectors that keep deer off your property without the need for messy or expensive chemical solutions. A built-in infrared motion sensor activates the ultrasonic repeller when pests move into coverage zone. Dimensions L x W x H in. 6 3/4 x 5 1/4 x 3 1/2, Material Type Sealed temperature resistant plastic, Single, Pair, or Set Single, Power Source Battery or electric, Removal Of Deer, Indoor/Outdoor Use Outdoor, Includes Two motion settings, Product Style Repellent. Choose between continuous activation or motion sensor-triggered activation Powered by 50ft. AC cord or four C batteries not included battery operation only allows use of motion-triggered activation Protects up to 4000 sq. ft.