Frequency bands: Bluetooth and wifi are mostly 2.4G frequency bands, GSM is divided into 2G (older mobile phones, old mobile phones), 3G, 4G and other frequency bands, RF modules are mostly 315M/433M, 485/422M data communication frequency bands.2. TELEC is a mandatory certification for wireless products in Japan, which is somewhat similar to the domestic SRRC.It follows the Japanese radio law, and the specific test specification is to follow the MIC (Ministry of Internal Affairs and Communications) Notice No.88 regulations.3. The test items of WiFi and Bluetooth products are basically similar to the European standard EN300 328.Among them, the standard used by 2.4GHz WiFi products (802.11b/g, 2412~2472 MHz) and Bluetooth products is MIC Notice No.88 Annex43, but for the 14-channel (Channel 14: 2471 ~ 2497MHz) of 2.4GHz WiFi products, a separate Use Annex44 for testing and reporting.4. For 5GHz WiFi products (802.11a, 5180~5320MHz, W52 Band and W53 Band), the test standard to follow is Annex45, but it should be noted that the data shows that MIC will modify Annex45 in the near future, and 5.6GHz devices (Band W56 ) is also classified in Annex45, and has more stringent DFS test requirements for Band 56 frequency band.