Radio frequency (RF) is a kind of high-frequency electromagnetic wave, which is generated by an alternating electric field with positive and negative changes as high as one million times per second. It can directly penetrate the epidermis of the skin, reach the dermal tissue, heat the collagen fiber to 55℃-65℃, make the collagen fiber contract and thicken, continuously increase the proliferation and secretion of collagen, replenish the elastic collagen lost with age, and smooth wrinkles.

Extended data:

At first, RFID technology was widely used and popularized at low frequencies (125kHz to 134kHz). This frequency mainly works by inductive coupling, that is, there is transformer coupling between the reader coil and the inductive coil, and the voltage induced by the alternating magnetic field of the reader in the inductive antenna can be used as the power supply voltage after rectification.

Features:

Generally, the working frequency of inductors working at low frequency is between 120kHz and 134kHz, and the working frequency of Ti is 134.2kHz, and the wavelength of this frequency band is about 2500m；.

1. Generally speaking, except for the influence of metal materials, low frequencies can pass through any material without reducing its reading distance.

2. There are no special licensing restrictions for readers working at low frequency in the world.

3. Low-frequency products have different packaging forms. A good packaging form is too expensive, but it has a service life of more than 10 years.

4. Although the magnetic field area of this frequency drops rapidly, it can produce a relatively uniform reading and writing area.

5. Compared with RFID products in other frequency bands, the data transmission rate in this frequency band is relatively slow.

6. Compared with other frequency bands, the price of sensors is relatively expensive.

Baidu encyclopedia -RF RF