Adopts ultrasonic technology which can affect the pest's hearing and nervous system to keep them away from your home. Safe without radiation, harmless, odorless to humans and pets, does not interfere with household appliances. Humans and pets can't hear the ultrasonic frequency, so it's a silent insect repellent. Plug pest repellent into the wall charger, the effective area up to 80-120 square meters. Repel mice, mosquitoes, ants, rats, cockroaches, spiders, rodents, bedbugs, flies, fleas and other insects. Suitable for living room, kitchen, bedroom, bathroom, workshop, garage, warehouse, parking lot, etc. Specification: Material: ABS Plug Type: EU Plug Power: 5W Output Frequency: 50kHz-60kHz Effective Coverage: 80-120 (field open) Size: Approx. 5.8 x 2.9 x 9.8 cm Package Included: 1 x Ultrasonic Pest Repeller