Solar Powered Ultrasonic Pest Control Device (Set of 2) has the following features:

• This environmentally friendly pest control device emits a powerful ultrasonic wave through your lawn to eliminate gophers, moles and other ground-dwellers. Effective coverage about 7,000 SF or 650 square meters, and emits sounds underground every 30-50 seconds. The solar panel makes it ideal for do-it-yourself homeowners. For best results, place the 2 units approximately 60 ft. apart in the highest hazard area.
• Frequency: 400HZ - 1000HZ.
• Rated voltage: 1-2V.
• Works day and night.
• 2 x 600mA Ni-Cd rechargeable battery.
• Safe around pets and children.
• No poisons or chemicals, environmentally friendly.
• Sun powered.
• No wiring.
• Fast & easy to install.
• Energy saving, no electricity bills.
• Safe, water resistant.
• Corrosion resistant.
• CE certified.