Ultrasonic Home Warehouse Mouse Rat Mosquito Cockroach Mosquito Repellent Rejector Specifications: Novel design and convenient use. Suitable for indoor/outdoor use. The ultrasonic frequency of 9-36kHz automatically changes and scans, acting on the auditory system and nervous system of mice and Mosquit. It caused discomfort and unhappiness on the Mosquito to make them fleed the area. Mosquito that can be driven off are mice, mosquitoes, cockroaches, fleas, flies, crickets, ants, termites, etc. It is safe, environmentally friendly, odorless and tasteless, and has very low power consumption. Widely used in homes, warehouses, shops, hotels, hospitals, offices, computer rooms, gardens, hotel grain storage, etc. Item Name: Mosquito Repeller Plug: EU/US/UK Plug (Optional) Material: ABS + Electronic Components Effective Range: about 40-60 Square Meters Voltage: AC 90-250V Frequency Range: 50KHz-60KHz Power: Less Than 2.5W Features: Easy to Use, Safe, Efficient, Mosquito Rejector Size: 9.7cm x 6cm/3.82" x 2.36" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Mosquito Repeller (Random Color) 1 x User Manual