Description: Plug: international (American standard) two holes Voltage: 90V~220V Rated frequency: 50/60 HZ Power: 1W Function: Repelling insects, rodents, and mites Effective range: 30 square meters (without wall blocking) Material: ABS-A1 brand new flame-retardant plastic Dimensions: 11.4*4.1*4.15cm (including plug) Color: white, green, black Usage: plug in the power supply, the indicator light is on, and the product is in standby state 1. Press the power button once to enter the first gear mode, ultrasonic insect repellent night light is on, and the indicator light is warm white 2. Press the power button twice to enter the second gear mode, turn off the night light and only ultrasonic insect repellent works, the indicator light switches to green 3. Press the power button for the third time to shut down Working principle: Using modern microelectronics technology, special frequency ultrasound is directly used to act on the auditory nervous system of small animals, which makes the physiological system disorder and irritable, loss of appetite, and gradual death. Built-in smaller ultra-thin ceramic sound wave plate, using mirror image to make sound Principle, while ensuring the repelling effect, it is basically no noise, repels mosquitoes and does not affect sleep Specifications: 1 Ultrasonic insect repellent night light is designed with frequency conversion, including the frequency that mosquitoes, mites, mice, and other small insects are offended. The frequency is changing every second. In addition, the indicator light is a 40-second cycle of breathing. The repelling effect is enhanced by light waves. However, the sensitivity of each kind of small animal to sound waves is different, so the repelling effect of different animals is different. 2 It takes an interference cycle to get rid of the mites. About a few days, the mites cannot leave, so the sound waves make the mites uncomfortable to hunger until they can't reproduce and die. 3 Repelling rats will greatly reduce the frequency and number of rats and their staying time. It also requires human cooperation to clean up the resident space of rats. If there is food in the rat's nest, although the rats are disgusted with ultrasound, they are still in order to produce Will appear, but will reduce the frequency of occurrence 4 In the case of mosquito repellent, physical mosquito repellent cannot be compared with toxic mosquito coils, but modern people are slowly accepting physical mosquito repellent and think it is healthier 5 Ultrasonic-driven products are not harmful to humans, cats and dogs, and have no radiation. Please rest assured, it is just that this sound wave frequency makes certain animals offensive. 6 Use mirrored sound waves to produce sound, and the sound hole is on the back of the product. Using the principle of obstructing reflection of sound waves, a mirrored sound wave is formed, so that the sound wave is better diffused and has the effec