Transmitting ultrasonic via vibration. 
The mouse 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.

Features:

Helps drives away mouse ，mosquitoes and other pests 

Functions 24 hours a day 

Powered by solar panel 

Transmits ultrasonic sound every 30 seconds 

Aluminum spike with sonic transmitter 

Rechargeable battery inside,1.2V 800MAH Ni-cd.

Covers up to 25m²
Environmentally friendly and safe
Frequency: 400 - 800Hz