1. Transmitting sonic via vibration. Pest repeller is used to
affect the acute hearing of underground rodents,with very effective
preventive effect. The sonic will deceive them, making them feel
endangered,so as to force them away from the vibrating area.
Transmitting ultrasonic every 30 senconds.
2.Effective Range:625 sq.m.
3.Frequency: 400 Hz-1000Hz
4.Rechargeable batt included, 1.2V 800MAH Ni-cd