| Transmitting ultrasonic via vibration. Pest repeller is used to affect the acute hearing of underground rodents,with very effective preventive effect. The ultrasonic will deceive them, making them feel endangered,so as to force them away from the vibrating area. Transmitting ultrasonic every 30 senconds. Effective Range:500㎡ Solar pannel type:polycrystalline Solar pannel: 4v 45MA Rechargeable batt : 1.2V 700MAH Ni-MH Power:0.192w Frequency: 300 - 700 Hz Pannel size:74x76.6mm Charge electrical current:When environment Light has 70000LUX ,charge electrical current≥50MA |