A. THE ORIGINAL 6-in-1 PEST REPELLENT: The first and still a popular ultrasonic electronic pest deterrent on the market with coverage up to 5,000 square feet. Get rid of pests fast. Inaudible High-Pressure Ultrasonic Sound Wave, audible Sonic Harassment & Predator Sounds (Adjustable - Turn OFF Sonic Harassment by the dial will not affect the ultrasonic signal which emits at a fixed rate). Sound frequency:15 kHz -18 kHz. B. USE ANYWHERE: Day, Night or 24-Hour (3 Modes) protection for your garden, lawn, cabin, shed, attic, farm, barn, warehouse, patio or wherever safe and effective pest control is needed. Adjustable frequency dial allows you to get rid of cats, dogs, mice, squirrels, rats, skunks, raccoons, birds, deer, mosquitoes and more. Or set it to repel all of them at the same time. Provides humane and chemical-free pest control. C. EXTENDED COVERAGE: A powerful PIR infrared motion sensor available. Use the sonic repeller setting or adjust it so it is completely quiet and inaudible to humans. Device Installation: The ultrasonic sound emits in a forward direction from the device with a range of about 170 degrees horizontal and 60 degrees vertical. D. WEATHERPROOF: Unique seal and design lets you set it anywhere. The Yard Sentinel comes with a long extension cord on the market or use batteries (not included). For cabin and camp owners: Other power accessories are available. Operating temperature: 14 to 122 . E. WARRANTY: pays attention to the product experience of all customers, the product is a one-year warranty, to ensure that your satisfaction. If there are any questions, please contact us first.