Description: Material: ABS Power: 5W Voltage: AV 90V-250V Frequency: 50Hz-60Hz Size: 60*60*21.5mm Plug-In: US, EU Gear 1: The initial frequency of the buzzer is 25KHz, and then it evenly increases to 65KHz, which takes 3 minutes, and then starts to cycle the frequency change of 25-65KHz. Gear 2: The initial frequency of the buzzer is 15KHz, and then gradually decreases to 10KHz, and then increases from 10KHz to 15KHz. This cycle takes 3.2 seconds for one cycle. Specifications: 1The ultrasonic will make pest feel uncomfortable and run away. 2The ultrasonic pest repeller is adopted the quality ABS plastic material for the shell. Good touch feel, sturdy and durable. 3The pest repeller product is adopted the advancing ultrasonic technology. Non-toxic, safe and effective! It wont cause any harm to your families health. 4Smell-less and flavorless. It repels pest, does not kill pest. Low electric power consumption. Environment-friendly. 5The pest repeller is widely used in home, warehouse, shop, hotel, hospital, office, garden, grain depot and so on. Package Included: 1/2pcs Ultrasonic Mosquito Insect Repellent Notes: Why choose us: 1. No any noise for driving pest. 2. Repellering many kinds of pests continuously and Powerfully. 3. Easy to use: Just plug in. 4. 100% Safe and economical: noiseless and no radiation, safe for pregnant woman and baby to use 5. Pack of 6: One package solve all rooms EFFECT TIME: Ultrasonic is an expulsion process 3-5 days: Mice, cockroaches are eager to interfere with their physiological and nervous systems for the ultrasound, the creatures hidden in the dark will be forced out. 2-3 weeks