Features: 1. Upgraded chips emitting ultrasonic waves, irritates nervous system of insects and rats and threatens them to flee away from your house. 2. The pest control repellent safeguards your family and solves pest troubles with no rebound effects. 3. Grocery stores, clothing stores, food stores, furniture stores, etc., which are often bitten by rats and insects; courtyards, villas, homes, air-conditioned rooms, canteens and storage rooms. 4. This ultrasonic pest repeller reject pest and mice with the ultrasonic and electromagnetic waves by attacking their nervous system, which makes them extremely uncomfortable. 5. Easy to use: Just plug in the repellant into the socket. Please make sure to install it vertically 20-80cm above the floor. 6. Safe for humans and pets: Ultrasonic sound is inaudible to humans and household pets; eco friendly alternative to poisons and traps. Specification: Condition: 100% brand new Material: Abs/plastic casing Weight: 110g Size:Approx 10cm*7cm*8.4cm/3.93*2.75*3.30inch Operating ambient temperature: 0 to 40 degrees Celsius Operating voltage range: Ac90v ~ 250v, Frequency: 50hz ~ 60hz Voltage: Ac 90-240v Specifications: European regulations, us regulations, British regulations Package list: Mosquito Repellent*1 Note: 1. Please allow 1-3cm error due to manual measurement, thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.