By emitting sound waves and pulsations to repel moles and snakes very effectively. These sonic pulsations irritate underground rodents and snakes, simulating danger, it repelling them away from the irradiated land.
By switch the button to choose diffierent work model and on-off key to repel moles and snakes.      
1. With LED night light, when the dark, the three LED lights will illuminate and cycle 1 second per LED light, the LED lights will continue to work for 4 hours to brightening your garden.
2. Waterproof  and no water seepage.
3. Solar panels: amorphous silicon 3V/80Ma. 
4. Rechargeable battery: 1pcs AA 1.2v/800mah Ni-Mh battery.
5. Frequency: 400Hz-1000Hz.
6. Working range: about 800-1000 square meters.