LoRa & LoRaWAN Modules: China Sourcing Reference

LoRa modules are among the most certification-intensive wireless components you can source from China. The underlying IP is owned by Semtech (US), the modules are largely manufactured in China, and the certification burden for each target market is substantial. In our sourcing work across Shenzhen and Dongguan RF suppliers, the same failures recur: mismatched frequency bands, falsified certification marks, and modules that pass bench tests in China but fail radiated emissions at the destination lab.

Overview

LoRa (Long Range) is a proprietary chirp spread spectrum (CSS) modulation owned by Semtech. LoRaWAN is the network layer protocol stack built on top, defined by the LoRa Alliance. The two terms are often used interchangeably but they are distinct: you can run LoRa point-to-point without LoRaWAN, and LoRaWAN requires LoRa at the physical layer.

Typical link budget: 154–157 dB with SX1262. Maximum range in open terrain: 10–15 km. Data rates: 0.3 kbps to 37.5 kbps depending on spreading factor (SF7–SF12) and bandwidth (125/250/500 kHz). Not suitable for high-throughput applications — packet size is capped at 242 bytes. LoRaWAN is a dominant protocol choice for industrial IoT sensor deployments where nodes are battery-powered and range is prioritized over throughput, with packets aggregated upstream by multi-protocol IoT gateways before reaching the network server.

Key Specifications

Parameter	Typical Range	Notes
Frequency bands	433 / 470 / 868 / 915 / 923 MHz	Region-specific — see variants table
Sensitivity	-136 to -148 dBm	Varies by SF and bandwidth
TX power	+14 to +22 dBm	+22 dBm requires PA variant
Data rate	0.3–37.5 kbps	Inversely related to range
Supply voltage	1.8–3.6 V	Check regulator requirements
Standby current	1–3 µA	Critical for battery-powered nodes
Package	SMD / DIP / Stamp hole	Stamp hole (castellation) for reflow

Main Variants

By Chipset Generation

Chipset	Key Improvement vs Prior	Modules Using It
SX1276 (Semtech, 2013)	Original LoRa — baseline	AI-Thinker Ra-02, older EBYTE E32
SX1262 (Semtech, 2019)	+3 dB sensitivity, lower current, SPI-compatible	EBYTE E22, E220, RAK4630, Heltec LoRa 32 v3
SX1268 (Semtech, 2019)	SX1262 variant for CN470 / AS923	EBYTE E22-400 series
LR1110 (Semtech, 2021)	Multi-stack: LoRa + Wi-Fi scan + GNSS	RAK3372 — for geolocation use cases

Recommendation: Specify SX1262 LoRa modules ready to source for new designs unless you need CN470 specifically (SX1268).

By Frequency Band (Regional)

Region	Band	Regulatory
EU	868 MHz	ETSI EN 300 220, CE/RED required
US / Canada	915 MHz	FCC Part 15.247
Japan	920 MHz	TELEC (MIC)
China	470–510 MHz	SRRC (Ministry of Industry and IT)
Southeast Asia	923 MHz	Varies by country — check IMDA (SG), NBTC (TH)
Australia	915 MHz	ACMA, RCM mark

A 868 MHz module cannot be legally sold in the US and vice versa. Antenna matching also differs — a 915 MHz PCB trace antenna will be mismatched on 868 MHz.

Key Suppliers (China-based)

Supplier	Series	Notes
EBYTE (成都亿佰特)	E32 (SX1276), E22 (SX1262), E220	Largest volume Chinese supplier; QC inconsistent at MOQ <500
AI-Thinker	Ra-02	SX1276, 433 MHz, very low cost; no FCC/CE cert
Heltec Automation	WiFi LoRa 32 V3	ESP32-S3 + SX1262 combo; CE certified; popular for prototyping
RAK Wireless	RAK4630, RAK3372	Nordic nRF52840 + SX1262; WisBlock ecosystem; CE/FCC pre-certified
Dragino	LA66, LGT92	LoRaWAN end-node modules; CE/FCC certified; good documentation

Sourcing from China: What to Look For

• Verify FCC/CE grants before ordering production quantities. Suppliers routinely print FCC IDs on uncertified modules. Cross-check the printed FCC ID against the FCC Equipment Authorization database. A valid grant must exist with matching module model number. For EU-bound hardware, follow the same discipline with the CE marking reference and the notified body’s test report.
• Match the frequency band to your target market before quoting. EBYTE sells E22-900T22S (915 MHz) and E22-868T22S (868 MHz) as separate SKUs. Ordering the wrong band from a Chinese factory is a common and expensive mistake — RF modules cannot be retuned after production.
• Request 3rd-party RF test reports, not self-declaration. Legitimate certified modules will have test reports from CNAS-accredited labs (Shenzhen Waltek, SGS China, Bureau Veritas China). Self-declaration CE is legal in some product categories but not radio transmitters — RED (Radio Equipment Directive) requires independent test.
• Evaluate antenna connector quality. IPEX/U.FL connectors on budget Chinese modules fail after 20–30 mate/unmate cycles. For field-deployed hardware, specify SMA or specify strain relief in the mechanical design.
• Check SX1262 vs SX1276 in the actual chip marking if buying non-brand modules. Some vendors substitute SX1276 (cheaper) in modules marketed as SX1262-based. Request component-level photos of the PCB or incoming inspection.
• Audit firmware provenance for LoRaWAN stack modules. Modules that claim a pre-integrated LoRaWAN stack sometimes ship with outdated StackForce or Semtech libraries. Confirm the firmware version, the supported LoRaWAN regional parameters (RP002 is current), and whether over-the-air updates are supported. For combo boards that pair a host SoC with the radio, the same diligence applies to the ESP32 sourcing process for the controller side.

Common Issues

Spurious emissions failing regulatory tests. Chinese manufacturers often optimize for link budget and TX power without adequate harmonic filtering. Pre-compliance testing before committing to a supplier saves $3,000–8,000 in re-spin costs. Request a conducted emissions test report (not just radiated) for the specific module + antenna combination you plan to use.

Frequency calibration drift over temperature. SX1262 crystal oscillator accuracy affects channel center frequency. At -20°C, a ±10 ppm crystal can drift enough to cause packet loss in narrow-band LoRaWAN gateways, which is why field deployments typically standardize on industrial LoRaWAN IoT gateways with concentrator-grade reference clocks. Specify TCXO variants (EBYTE E22-xxxT-series with “-T” suffix indicates TCXO) for industrial temperature range applications.

Counterfeit Semtech chips. Semtech ICs have been counterfeited — most commonly SX1276. The RF performance of clones degrades at edge cases (high SF, low signal). If your supplier offers SX1262-based modules at prices below EBYTE E22 retail, request the silicon die photograph or buy from a Semtech-authorized distributor (Mouser, DigiKey, Arrow).

Inconsistent RF shielding. Budget modules omit the metal shield can to save $0.15–0.30 per unit. Without shielding, nearby digital noise from the host MCU couples into the RF front end and degrades sensitivity by 3–6 dB. For products that must pass EMC, specify shielded modules or plan for additional PCB shielding.

Practical Buyer Guidance

Verification Checklist

Before releasing a purchase order:

1. Confirm the exact chipset generation by requesting a high-resolution photo of the IC marking.
2. Match the SKU suffix to the target frequency band: 868 for EU, 915 for US/AU, 923 for AS923, 470/490 for China.
3. Verify the FCC ID, CE declaration, or TELEC certification number against the official database, not the supplier’s PDF.
4. Request the RF test report from a CNAS-, ILAC-, or A2LA-accredited lab for the exact module + antenna pairing.
5. Inspect the antenna connector type and mate-cycle rating; swap to SMA for field hardware.
6. Confirm LoRaWAN regional parameters version and firmware update path for stack-integrated modules.
7. Run a 10-unit sample burn-in at your own temperature extremes before approving the supplier for production.

For broader supplier vetting, see how to verify a Chinese supplier.

Common Factory Mistakes

• Shipping 915 MHz modules for an EU order. Factories sometimes treat 868 MHz and 915 MHz as interchangeable “LoRa modules.” The difference is regulatory and physical; you cannot use one in the other’s market.
• Using consumer-grade crystals for industrial-temperature specs. A module rated -40°C to +85°C needs a TCXO or tightly specified crystal. Standard crystals will drift enough to drop packets below -20°C.
• Recycling certification documents across variants. A CE report for the 868 MHz variant does not cover the 915 MHz variant. Check the report’s model number and frequency range line by line.
• Failing to document antenna dependency. Regulatory grants are valid only for the antenna(s) listed in the test report. Swapping to a higher-gain antenna without retesting can void the certification.

When to Engage a Lab

Engage a third-party RF lab when you are integrating a bare module into your own enclosure, when pre-compliance scans show emissions within 3 dB of the limit line, when the supplier cannot produce an accredited test report in English, or when you are targeting TELEC (Japan), SRRC (China), or RCM (Australia) where local accreditation matters more than self-declared CE. Module-level pre-compliance screening in Shenzhen runs $800–2,500; full certification is shown in the table below.

Cost and Timeline Ranges

Item	Typical Cost	Typical Lead Time
Bare SX1262 module (1k units)	$2.50–4.00	2–4 weeks
Pre-certified module (1k units)	$5.50–12.00	3–5 weeks
Factory audit	$1,200–2,500	1 day + report
RF pre-compliance scan	$800–2,500	3–5 days
FCC Part 15.247 certification	$4,000–10,000	8–14 weeks
CE/RED assessment	€5,000–12,000	6–10 weeks
TELEC (MIC) Japan	¥500,000–1,200,000	8–12 weeks

The break-even between bare and pre-certified modules usually sits between 500 and 2,000 units, depending on how many markets you enter. For multi-market products, pre-certified modules almost always pay back — a pattern we saw in an EU industrial IoT gateway project where the certification savings outweighed the higher per-unit module cost.

Certifications Required

Certification	Market	Typical Cost	Lead Time
CE (RED)	EU	€5,000–12,000	6–10 weeks
FCC Part 15.247	US	$4,000–10,000	8–14 weeks
TELEC (MIC)	Japan	¥500,000–1,200,000	8–12 weeks
SRRC	China mainland	¥3,000–8,000	4–8 weeks
RCM	Australia / NZ	AUD 2,000–6,000	6–10 weeks

Pre-certified modules from RAK Wireless, Dragino, or Heltec eliminate this cost if you are integrating a module into a larger device rather than selling the module standalone. Our inspection process covers grant verification for all IoT modules before production release. Check the relevant certification body’s website to confirm the specific module model is listed — not just the brand. For Japan-market specifics, refer to the TELEC reference.

How this shows up in our work

When we visit RF module suppliers in Shenzhen or Chengdu, we cross-check FCC IDs in the Equipment Authorization database and confirm frequency-band SKUs. A common issue we see on the floor is a 915 MHz module picked for an EU-bound order. In a recent project we ran a 10-unit burn-in before approving mass production.

Related Resources

• Industrial IoT Hardware Sourcing Guide
• How to Source Electronics from China
• BLE 5.x Modules: Technical Sourcing Reference
• Wi-Fi 6 Modules: China Sourcing Reference
• FCC Certification Reference
• CE Marking Reference
• Electronics Quality Inspection
• Factory Audit Checklist
• IoT Modules & Components Sourcing
• Industrial IoT & IIoT Sourcing
• JP Distributor LoRa Gateway Case Study