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TELEC certification (also known as Japan Radio Law certification) is mandatory for all IoT wireless devices entering the Japanese market. This article provides a comprehensive overview of TELEC certification testing standards for IoT devices, covering applicable regulations, test requirements, and practical guidance for manufacturers.

TELEC Certification Regulatory Framework

TELEC certification is governed by Japan's Radio Act (電波法) and administered by the Ministry of Internal Affairs and Communications (MIC, 総務省). The certification name "TELEC" comes from the Telecom Engineering Center, which was the primary certification body, though other Registered Certification Bodies (RCB) now also issue certificates.

All IoT devices that intentionally emit radio waves must obtain TELEC certification before being sold or used in Japan. This includes:

• Wi-Fi enabled IoT sensors and controllers

• Bluetooth/BLE smart home devices

• Zigbee/Z-Wave home automation products

• Sub-GHz LPWAN devices (LoRa, Sigfox)

• RFID/NFC readers and tags

Operating unauthorized radio equipment in Japan is a criminal offense under the Radio Act, with penalties including imprisonment and substantial fines.

Testing Standards by Wireless Technology

TELEC certification testing follows specific MIC technical standards (MIC Notice 告示) for each radio technology:

2.4GHz Band (Wi-Fi / Bluetooth / Zigbee)

• MIC Notice No. 88 (1987) — 2.4GHz band low-power data communication system

• ARIB STD-T66 — 2.4GHz band low-power data communication system (Wi-Fi/Bluetooth)

• ARIB STD-T93 — 2.4GHz band low-power data communication system (Zigbee)

5GHz Band (Wi-Fi)

• MIC Notice No. 7 (2005) — 5GHz band wireless LAN system

• ARIB STD-T71 — 5GHz band wireless LAN system

Sub-GHz Band (LoRa / Sigfox / Custom RF)

• MIC Notice No. 58 (1992) — Specified low-power radio station (920MHz band)

• ARIB STD-T108 — 920MHz band low-power data communication system

Core Test Items for IoT Device TELEC Certification

Regardless of wireless technology, TELEC certification requires the following core test items:

• Frequency deviation:Carrier frequency must remain within the specified tolerance of the assigned frequency

• Occupied bandwidth:99% power bandwidth must fall within the permitted channel bandwidth

• Spurious emissions:Out-of-band and spurious emission levels must meet the limits defined in the applicable MIC Notice

• Antenna power:EIRP must not exceed the maximum permitted value for the radio classification

• Carrier sense / DFS (where applicable):For Wi-Fi devices, carrier sense (2.4GHz) and DFS (5GHz W52/W53 bands) functionality must be verified

Japan-Specific Requirements and Differences from FCC/CE

TELEC certification has several requirements that differ from FCC and CE-RED:

• DFS requirements are stricter:Japan requires DFS for 5GHz W52 (5.17-5.23GHz) and W53 (5.25-5.33GHz) bands, unlike the EU where DFS applies primarily to 5.25-5.35GHz and 5.47-5.725GHz

• Antenna type restrictions:TELEC certification is specific to the antenna type used during testing. Changing the antenna design may require re-certification

• Japanese language labeling:Product labeling must include Japanese text with the TELEC certification number and specific compliance statements

• Construction design certification:Unlike FCC which permits SDoC for some products, Japan requires formal certification by an RCB for all intentional radiators

TELEC Certification Process and Timeline

The TELEC certification process for IoT devices typically takes 6-10 weeks and involves:

1. ①Document preparation:Prepare technical documentation, circuit diagrams, antenna specifications, and product descriptions

1. ②Laboratory testing:Submit samples to a Japan-recognized testing laboratory for RF parameter testing

1. ③RCB review and certification:The Registered Certification Body reviews test reports and documentation, then issues the TELEC certificate

1. ④Labeling and market entry:Apply the TELEC certification mark and Japanese compliance statements on the product

Working with experienced certification partners like GTG Group can help navigate the specific requirements of Japanese radio regulations and ensure a smooth certification process.

This article is AI-assisted and for reference only. It does not constitute any certification commitment or legal advice. Please refer to the latest official regulations.

Contact: 18826804895 | net01@gtggroup.com