4 pcs Ultrasonic Rodent and Insect Repellent, Electric Fly Repellent, Indoor Mouse Repellent Device, Mosquito, Cockroach, Ant, Spider Repellent - Fei Yu

General Description This advanced ultrasonic repellent uses ultrasonic technology to stimulate the auditory system of mosquitoes and other pests, making them unbearable and uncomfortable. It is ideal for use in various environments such as homes, warehouses, shops, hotels, hospitals, and offices. For optimal effectiveness, it is recommended to use multiple units in large areas. Technical Specifications Ultrasonic Frequency: 22~65 kHz Input Voltage: AC 90V~250V / 50Hz~60Hz Power: 5W Effective Coverage Area: Approximately 80-120 square meters (800-1300 sq ft) Installation Install the device vertically at a height of 80-120 cm from the floor. Plug the device into a power outlet to operate it. Usage For best results, it is advisable to use one unit per room, as walls and furniture can weaken the effect of the ultrasonic waves. It may take 1 to 3 weeks to see results, and a temporary increase in insect activity may be noticed at the beginning of use. Other information: This product is non-toxic and environmentally friendly, with no chemicals or sprays. Do not use if you have a hamster as a pet. The package contains 4 ultrasonic repellents and 1 instruction manual.