Ra-01SH - 803-930MHz LoRa SX1262 Transceiver Module | Ai-Thinker
MPN: Ra-01SH ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.72 | $2.72 |
| 10 | $2.45 | $24.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.72 | $1,720.00 |
Ra-01SH Overview
What is a LoRa transceiver module? A LoRa (Long Range) transceiver is a sub-1 GHz radio modem that uses spread-spectrum chirp modulation to deliver kilometer-scale wireless links at very low data rates. It belongs to the broader family of ISM-band wireless transceivers (which also includes sub-GHz FSK radios, Sigfox, and proprietary OOK links), all of which trade data throughput for link budget and battery life. A LoRa module integrates the SX126x-class radio IC, a TCXO or crystal reference, an RF matching network, and an antenna interface into a single reflow-solderable unit, exposing a digital SPI control port to the host MCU and removing the need for RF expertise during board bring-up.
The Ra-01SH is engineered for ultra-long-range, low-data-rate applications where link margin and interference immunity dominate the design. Its Semtech SX1262 radio delivers up to +22 dBm Tx power while the receiver's -148 dBm sensitivity (at the lowest spreading factor and maximum bandwidth) yields link budgets suitable for multi-kilometer line-of-sight links. FSK, GFSK, MSK, GMSK and OOK compatibility add flexibility for legacy or proprietary narrow-band protocols.
Typical applications include LoRaWAN end-node sensors, Meshtastic mesh nodes, remote metering, agricultural and environmental telemetry, low-power wide-area network (LPWAN) prototyping, and industrial remote control. The module's 4.2 mA receive current and deep-sleep support make it ideal for battery-powered devices that spend most of their life in standby.
When designing with the Ra-01SH, treat the antenna section as a critical RF sub-circuit: keep the I-PEX antenna far from ground pours and metal shields, and respect ESD precautions per Ai-Thinker's specification document. Use a 3.3 V regulated rail capable of delivering the ~140 mA transmit peak, and a 10 uF + 100 nF decoupling network at the module's VDD pins to suppress load-step transients.
Drop-in alternatives for Ra-01SH — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with Ra-01SH (same form factor and footprint) — differing in Maximum TX Power, RF Chip, Receive Sensitivity, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
Ra-01SCH
✅ Drop-In📋 Reference alternative (not in catalog)
Ra-01SH-P
✅ Drop-In📋 Reference alternative (not in catalog)
Ra-01H
✅ Drop-In✓ In Stock
$3.3 / Unit
View Datasheet →HT-RA62
✅ Drop-In📋 Reference alternative (not in catalog)
Ra-01S
✅ Drop-In📋 Reference alternative (not in catalog)
Ra-01SH Specifications (manufacturer-published)
| Module Type | LoRa Transceiver Module |
| RF Chip | Semtech SX1262 |
| Frequency Range | 803 MHz to 930 MHz |
| Modulation | LoRa, FSK, GFSK, MSK, GMSK, OOK |
| Maximum TX Power | +22 dBm (160 mW) |
| Receive Sensitivity | -148 dBm (LoRa, max SF/BW) |
| Supply Voltage | 2.7 V to 3.6 V |
| Recommended Supply Voltage | 3.3 V |
| TX Current | 140 mA at +22 dBm |
| RX Current | 4.2 mA |
| Interface | SPI |
| Antenna Connector | I-PEX (U.FL compatible) |
| Package | SMD-16P |
| Package Type | Surface Mount |
| Operating Temperature | -40 C to +85 C |
| Modulation Sensitivity | -140 dBm (FSK, typical) |
| Frequency Bands Supported | 868 MHz (EU), 915 MHz (US/AU), 923 MHz (AS923) |
| RoHS Status | Compliant |
Ra-01SH Pin Configuration
| Pin 1 | GND — Ground reference |
| Pin 2 | IO4 — SX1262 GPIO (general purpose RF switch control) |
| Pin 3 | IO5 — SX1262 GPIO (general purpose RF switch control) |
| Pin 4 | IO6 — SX1262 GPIO (general purpose) |
| Pin 5 | IO8 — SX1262 GPIO (general purpose, optional status LED) |
| Pin 6 | IO9 — SX1262 GPIO (general purpose) |
| Pin 7 | RST — SX1262 reset, active low |
| Pin 8 | BUSY — SX1262 busy / status flag, active high |
| Pin 9 | DIO1 — SX1262 interrupt output for packet events |
| Pin 10 | DIO2 — SX1262 programmable interrupt I/O (often used as RF switch control) |
| Pin 11 | DIO3 — SX1262 programmable interrupt I/O (often used as RF switch control) |
| Pin 12 | CSN — SPI chip select, active low |
| Pin 13 | SCK — SPI clock |
| Pin 14 | MOSI — SPI master out / slave in |
| Pin 15 | MISO — SPI master in / slave out |
| Pin 16 | VDD — 3.3 V supply (2.7 V to 3.6 V) |
Power & Thermal Characteristics
| Power Input | 2.7 V to 3.6 V |
| Operating Temperature | -40 C to +85 C |
Power input and thermal parameters for Ra-01SH as published by the manufacturer.
Typical Applications
Ra-01SH is suitable for 6 applications: LoRaWAN End-Nodes (Sensor Telemetry), Meshtastic Off-Grid Mesh Nodes, Industrial Metering and SCADA Telemetry, Agricultural / Environmental Sensor Networks, Home and Building Automation Bridges, Remote Control and Wireless Sensor Links.
LoRaWAN End-Nodes (Sensor Telemetry)
The Ra-01SH's -148 dBm LoRa sensitivity and +22 dBm TX power make it ideal for Class A LoRaWAN sensor nodes that must run for years on a coin cell or lithium pack. Placed on the SPI bus of a low-power MCU such as an STM32 or ESP32, the module's 4.2 mA RX current and deep-sleep support enable duty-cycled wake-measure-transmit cycles. Link budgets routinely exceed 150 dB at SF11/BW125 kHz, which translates to multi-kilometer outdoor range in EU868/US915 deployments. Use a 3.3 V LDO rated for at least 250 mA peak to handle the 140 mA TX transient cleanly.
Recommended
Meshtastic Off-Grid Mesh Nodes
Mesh firmware such as Meshtastic validates the Ra-01SH as a reference SX1262 module because its 803-930 MHz range covers the channel presets used by the mesh protocol across EU, US and Asia. The module's SPI interface lets it share a single SPI bus with the host's flash and sensors, while its +22 dBm TX output provides the link budget needed for sparse, mobile mesh deployments. Range tests commonly reach 5-10 km line-of-sight. Commissioning requires setting the same regional preset (US915/EU868/AS923) on module and host to align channel masks.
Recommended
Industrial Metering and SCADA Telemetry
For utility metering, water/gas AMR, and industrial SCADA tags, the Ra-01SH provides a robust narrow-band link at 868/915 MHz with strong interference immunity thanks to LoRa's chirp spread spectrum. Its SPI control port is straightforward to integrate with industrial PLCs and Cortex-M4 MCUs, and the -148 dBm RX floor supports in-building or below-grade installation where signal is heavily attenuated. The module's 2.7-3.6 V supply simplifies integration with 3.3 V PLC backplanes, and the SMD-16P package supports reflow assembly for volume manufacturing.
Recommended
Agricultural / Environmental Sensor Networks
Outdoor farms, vineyards, weather stations and forestry deployments benefit from the Ra-01SH's -40 C to +85 C operating range and its ability to push +22 dBm across 803-930 MHz for long, line-of-sight links. Sitting on a solar-powered IoT sensor with a 3.3 V regulator, the module's 4.2 mA RX current keeps night-time telemetry budgets tiny. Antenna placement is critical: keep the I-PEX antenna assembly clear of metal enclosures, water tanks and dense foliage to preserve range. The module's -148 dBm LoRa sensitivity extends single-hop coverage across many hectares.
Recommended
Home and Building Automation Bridges
In smart-home hubs, the Ra-01SH can act as a low-cost sub-GHz bridge between battery-powered sensors (window, doorbell, leak) and a Wi-Fi/BLE gateway. Modulation flexibility (LoRa/FSK/GMSK/OOK) lets the same hardware talk to legacy 433/868 MHz proprietary sensors and modern LoRa devices. The small SMD-16P form factor fits inside slim wall-mount boxes, while the I-PEX connector accepts a wide range of third-party antennas including stub PCBs and external whips.
Recommended
Remote Control and Wireless Sensor Links
RC drones, robotics and industrial remote I/O can leverage the Ra-01SH's FSK/GFSK modes for low-latency deterministic links where LoRa's long-range chirp isn't required. Its +22 dBm output gives robust telemetry at distances where a 433/868 MHz remote control link can drop frames. On the receive side the SX1262's programmable packet engine supports custom GMSK/MSK protocols up to 300 kbps, allowing lightweight encrypted command-and-control traffic without bogging down the host MCU.
Recommended
Recommended Products Summary
Engineering reference data for Ra-01SH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | Ra-01SCH | Ra-01SH-P | Ra-01H | HT-RA62 | Ra-01S |
|---|---|---|---|---|---|---|
| Package | SMD-16P | SMD-16P - same | SMD-16P - same | SMD-16P - same | SMD-16P footprint - same | SMD-16P - same |
| Brand | Ai-Thinker | Ai-Thinker | Ai-Thinker | Ai-Thinker | Heltec Automation | Ai-Thinker |
| RF Chip | Semtech SX1262 | Semtech SX1262 | Semtech SX1262 | Semtech SX1262 | Semtech SX1262 | Semtech SX1276 |
| Frequency Range | 803-930 MHz | 803-930 MHz | 803-930 MHz | 803-930 MHz | 803-930 MHz | 410-525 MHz |
| Maximum TX Power | +22 dBm | +22 dBm | +29 dBm | +22 dBm | +22 dBm | +20 dBm |
| RX Sensitivity | -148 dBm | -148 dBm | -148 dBm | -148 dBm | -148 dBm | -148 dBm |
| Supply Voltage | 2.7-3.6 V | 2.7-3.6 V | 2.7-3.6 V | 2.7-3.6 V | 2.7-3.6 V | 2.7-3.6 V |
| TX Current | 140 mA | 140 mA | 750 mA | 140 mA | 140 mA | 120 mA |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI |
Key Differentiators
- Highest link budget in 803-930 MHz from a stock SMD-16P module (vs Ra-01S)
- Lower TX current for typical sensor duty-cycling (vs Ra-01SH-P)
- Better documented SPI reference design (vs HT-RA62)
Design Notes
Estimated: Peak TX current is ~140 mA at +22 dBm, with burst transients exceeding that as the SX1262 internal PA ramps. Provide a 3.3 V LDO or DC-DC rated for at least 250 mA of continuous load and place a low-ESR 10 uF bulk + 100 nF decoupling cap within 5 mm of the module's VDD pin to suppress load-step ringing. For battery designs use a TI TPS62840 or equivalent to keep efficiency above 90% across the TX pulse.
Keep the I-PEX antenna footprint and the keep-out zone beneath it completely free of ground copper, traces, and metal shields. The castellated pad edge of the SMD-16P package serves as both the RF feedpoint and the antenna reference - any nearby metal will detune the antenna and reduce link budget by 5-10 dB. Follow Ai-Thinker's reference layout in the specification PDF for optimal RF performance.
The SX1262 requires careful SPI timing; the BUSY pin must be polled before issuing the next command - simple block writes while BUSY is high are ignored. Initialize the module with the matching regional LoRaWAN parameter set in EEPROM-equivalent (SX126x retention memory); sending commands with the wrong band plan makes the radio transmit on unauthorized frequencies and can violate ETSI/FCC rules. Always reset the module via the RST pin after power-up glitches to ensure deterministic boot.
Compliance Information
RoHS compliant per JLCPCB part record C2764087. The module is an ESD-sensitive device per Ai-Thinker's specification - standard ESD handling required during manufacturing and field service.
