The new SAR standard for mobile communication devices GB 21288-2022, which replaces the old standard, GB 21288-2007, has been implemented from January 01, 2024.
Therefore, all mobile communication devices, operating within 100 kHz ~ 300 GHz and used within 20 cm of the human body, should now comply to the new standard, GB 21288-2022.
The main technical changes are as follows:
1. Scope
The scope of the standard has been updated from “mobile phones used close to the head” to “mobile communication terminal equipment operating within 100KHz-300GHz and used within 20cm of the human body”.
2. Exposure Classification & Exposure Limits
The exposure limits, which are applicable to different frequencies and different body parts, are added.
| Classification | Frequency Range | Local SAR (Head & Body) |
Local SAR (Limbs) |
Local Absorbed Power Density Sab |
| Professional | 100 kHz ~ 6 GHz | 10 W/kg | 20 W/kg | - |
| >6 GHz ~ 300 GHz | - | - | 100 W/m2 | |
| Public | 100 kHz ~ 6 GHz | 2 W/kg | 4 W/kg | - |
| >6 GHz ~ 300 GHz | - | - | 20 W/m2 |
3. Labeling content & the annotation in the product manual
The applicable products should include the statements in their manual as follows:
① pacemakers, hearing aids, cochlear implants, etc.
The product instructions should indicate the matters that the users should pay attention to when using the devices.
② The device operating in 100 kHz ~ 6 GHz
“本产品局部暴露下电磁辐射比吸收率(SAR)最大值为x.x W/kg,符合GB21288-2022的要求”
("The maximum value of the electromagnetic radiation specific absorption rate (SAR) of this product under partial exposure is x.x W/kg, in compliance with the requirements of GB21288-2022")
③ The device operating in >6 GHz ~ 300 GHz
“本产品局部暴露下电磁辐射功率密度最大值为x.x W/m,符合GB21288-2022的要求”
("The maximum electromagnetic radiation power density of this product under local exposure is x.x W/m, in compliance with GB21288- 2022 requirements”)
④ The device operating in both 100 kHz ~ 6 GH & >6 GHz ~ 300 GHz
“本产品局部暴露下电磁辐射比吸收率(SAR)最大值为x.x W/kg。功率密度最大值为x.x W/m,符合GB21288-2022的要求”
("The maximum value of the electromagnetic radiation specific absorption rate (SAR) of this product under partial exposure is x.x W/kg. The maximum power density is x.x W/m, in compliance with the requirements of GB21288-2022.")
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