8 Pcs Ultrasonic Mouse & Pest Control Electronic Repellent Plug in, Indoor Rat
Specifications: Material: ABS Plastic Ultrasonic Frequency: 22~65KHz Effective coverage area: 800~1,200 sq ft Wide Coverage?. Working Principle: This rodent rat repellent ultrasonic plug in, through the release of double acoustic frequency ultrasonic battery waves, constantly stimulate and destroy the brain nervous system of pests, affecting the auditory system to achieve the purpose of repellent.