The listing, Portable Ultrasonic Pest Repeller Weitech #0220 has ended.
Excellent condition does not come with A/C Wall adapter runs off 9 volt battery(not included), great for large to medium rooms, camping ETC Shipped anywhere USA with tracking. Below is the company's description of the product.
The Weitech® Pest Repeller generates powerful ultrasonic signals, repelling pests from your home or office
Operating either with standard electric power or with a battery, this portable indoor/outdoor device goes anywhere to safely repel mice, spiders, fleas, cockroaches, crickets, and other insects with ultrasonic sound waves.
That means it's great for tents, RVs, and campgrounds as well as the home, office, and workroom.
With an AC adapter (included) it plugs into a standard wall socket, or it can be powered by a 9-volt battery (not included).
In either case, it sends out sound waves in the 26,000 to 45,000 Hz range to drive away pests in an area of up to 1,500 square feet without harming pets and humans, which cannot detect sound in this range.
This product will not harm household pets such as dogs, cats, birds, or fish, although pet mice, hamsters, gerbils and spiders should be kept away from this unit.
An LED lights shows when it's operating.
Weather-resistant, the repeller is encased in rugged, lightweight plastic and measures 4-3/4 by 2-3/4 by 2 inches.
No poisons, no chemicals, no traps
For indoor or outdoor use
Recommended for a Large to Medium Size Room
Repels pests up to 1500 sq. ft.
Dimensions: 4-1/2' x 2-1/2' x 1-1/2'
Frequency Range: 26,000 - 45,000 Hz
Power Input: 9VDC / 110VAC / 50mA
Model No: 0220