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  1. #1
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    The effect of electronic mouse repellent device

    Through the description of the listed products, it can be seen that the main function of this commodity is to make sound waves as the main function to achieve the effect of the repellent rats. The light source is only auxiliary to enhance the effect of the drive rats. The product can emit ultrasound. Scientists call the number of vibrations per second as the frequency of sound, whose unit is Hertz (Hz). The frequency of sound we can hear in human ears is 20Hz-20000Hz. Therefore, the sound wave at frequencies higher than 20000 Hz is called ultrasonic wave. The names of the different frequencies are also different, including the low frequency range from 30 to 15 0 HH, the middle and low frequency section from 15 to 500 HH, the middle and high frequency section of 500 to 5 K H and the high frequency section of 5K-16KHz. It can be clearly seen that the ultrasonic wave belongs to the high frequency section.

    In the eighty-fifth chapter, the item 85.43 is clearly stated in the electrical equipment and devices with independent functions of other items, which are not listed in this chapter: most of the instruments listed in this item are combined devices of electrical products or parts (electronic tubes, transformers, capacitors, chokes, resistors, etc.) and are fully operated by electric. And there is a high frequency or intermediate frequency amplifier under this item, so I suggest that this item should be included in this item. Thatís the introduction of electronic mouse repellent device.

  2. #2
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    a0d99ef7de.jpg

    speed governor for cars or speed limiter is a device designed to limit the speed of vehicle like truck, schools bus, car forklift and so on. Most of the speed governors are fitted because of the government regulations. Nowadays, we are rearching and developing the devices as a fleet management tool. With the function real-time tracking, Geo-fence, and data recorded, the speed limiters are widely adapted by some government like Kenya, Nigeria and also some fleet teams. For the safety, the school buses and buses team should be installed the devices properly. Also about the forklift speed limiter, it's a great tool to reduce the accidents and discipline the forklift team. With the lower prices but good quality control, the devices will save you a lot of costs in the very short time. For OEM/ODM to customize the functions you like, you can also contact us.


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