6 Pcs Ultrasonic Pest Repeller, Pest Control Plug in Indoor Pests for Mosquito, Insects,Cockroaches, Rats, Bug, Spider1.Product Specifications: -Material: ABS -Safety Devices: Built-in fireproof tank -Input Frequency: 25-65k Hz -Input Voltage: 90V~250V -Power: 5W -Size: 2.7*1.68*1.5in -Operating Temperature: -15°C-60°C -Perating Temperature: -10°C~60°C -Operating Humidity: ≤85%RH -Perating Humidity: ≤85%RH2.Features: Ultrasonic Pest Repeller Repellent Plug Indoor Pest Control Non-toxic and 100% Safe For Kids and Pet EFFECTIVE AGAINST PEST SOLUTION: Our pest ultrasonic repeller adopt the newest chip technology to create variable ultrasound to reduce olfactory, irritate auditory and disturb nervous system of pests, force them to leave your home. Best repel for mice, cockroaches, fleas, bugs, mosquitoes, flies, ants, insects and rodents.3.100% SAFE & NON-TOXIC: Our pest ultrasonic repeller just drive pests away without killing them, no poisons, no radiation, no chemicals, odorless, noiseless and 100% safe for babies, pregnant women and pets. Ultrasonic sound is inaudible to human and pet, provide you a quiet and comfortable pest free environment.4.SIMPLY TO USE: Just plug the ultrasonic pest control repeller in US power socket and the blue light will be on, which mean it is start working. Install different heights depending on the type of pest: 10-30 inches above from the ground is recommended for crawling pest, while higher 30 inches is recommended for flying pest.5.Note: 1. Indoor use only. 2. Keep away from wet area. 3. Do not clean with damp cloth or strong detergent. 4. Ensure there is no obstacle ahead. 5. Installation based on instruction and should be mounted 7 to 30 in from the ground vertically . 6. Pest repeller should be keep working for 24 hours for the best effect.