Wireless Modules from China: BLE, LoRa, Wi-Fi
3 resources tagged with "Wireless"
Wireless module sourcing from China spans BLE 5.x (nRF52840, nRF52832, EFR32BG22), LoRa/LoRaWAN (SX1276, SX1262), and Wi-Fi 6. The common thread across all of them is radio certification: each module needs a valid FCC grant and CE/RED assessment for your target market, and LoRa adds the wrinkle of regional frequency bands (868 MHz EU, 915 MHz US) that are not interchangeable. Pre-certified modules let you inherit the radio approval instead of certifying a bare chipset.
When sourcing any wireless module, verify the FCC ID grant actually exists in the FCC database and that the certified band matches where you ship — a part legal on 915 MHz in the US cannot be sold into the EU's 868 MHz band, and vice versa.
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FAQ
Which wireless protocol should I pick?
BLE for short-range phone-connected devices, Wi-Fi for high-bandwidth or always-on gateways, and LoRa for long-range low-power sensors. The right choice depends on range, battery life, and whether you need internet directly.
Can I reuse one module's certification globally?
No. FCC covers the US, CE/RED covers the EU, and bodies like TELEC cover Japan. A module is certified per region, and LoRa frequency bands differ by country, so confirm coverage for each target market.
How do I confirm a module's FCC grant is real?
Look up the FCC ID in the public FCC equipment authorization database. Counterfeit or copied modules often cite an FCC ID that belongs to a different part or does not exist at all.
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