Ultrasonic technologyUltrasonic pest repeller stimulates the horny nerves of pests and rodents through ultrasonic waves in the frequency range of 24 kHz to 64 kHz and destroys the sense of smell and nervous system. This electronic insect repellent can effectively chase mice, mosquitoes, spiders, insects, ants, flies, cockroaches, fleas and other pests from home. Safe and FriendlyThis kind of ultrasonic pest repeller / mouse repellent is used to repel the pests by emitting ultrasonic waves. However, such ultrasonic waves are invisible and harmless to humans and pets. No radiation, no chemicals, non-toxic, no smell and no noise. It can be used safely at home and can effectively deter pests. Easy to useThe ultrasonic pest repellent is portable and easy to install. Simply plug the ultrasonic pest repellent into any socket to serve it. When the lamp lights up, the Pest Repeller works. Widely used in homes, warehouses, offices, gardens, hotels etc. Large effective rangeAn ultrasonic pest repellent can cover an area of 80 to 120 square metres. It is recommended to install this ultrasonic insect repellent vertically >10-30 inches from the floor. Ultrasound cannot get through walls. If you have an insect repellent ultrasound in every room, you can achieve the best results. Features: Use safe and advanced effective technologies to destroy and stimulate the nervous system of pests. This electronic insect repellent can effectively hunt mice, mosquitoes, spiders, insects, ants, flies, cockroaches, fleas and other pests from home. No radiation, no chemicals, non-toxic, no odour and no noise. Installation method: Simply plug the pest repellent into any socket (> 10-30 inches) to serve it. Note: 1The ultrasonic waves cannot cross the walls. We recommend that you install one device for any room. Do not cover the surface with objects so as not to affect its effect. The effect of the insect repellent is not very obvious in one day, it takes 1-2 weeks. 3-4 weeks the effect is significant, so do not worry about the insect Forced clearance has no effect. You have to wait patiently for a few days. Specification: Operating voltage: AC90-240V 50/60HZ Power: 2-3 W Frequency: 24-64 kHz Material: ABS flame retardant material Package includes: 2 x ultrasonic insect repellents