ATK-LORA-02 - LoRa Wireless Serial Module | ALIENTEK
Référence : ATK-LORA-02 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.5 | $9,50 |
| 10 | $8.4 | $84,00 |
| 100 | $7.25 | $725,00 |
| 500 | $6.1 | $3 050,00 |
| 1 000 | $5.4 | $5 400,00 |
ATK-LORA-02 Présentation
A LoRa module (Long Range module) is a type of low-power wide-area network (LPWAN) wireless transceiver that uses chirp spread-spectrum (CSS) modulation to achieve multi-kilometer range at low data rates. Within the broader RF & Wireless taxonomy, LoRa modules sit below RF transceiver ICs and above bare RF amplifiers; the ATK-LORA-02 specifically belongs to the integrated RF Module subcategory, where the antenna matching network, MCU interface logic and regulatory-compliant RF shielding are pre-assembled, allowing the host MCU to send and receive UART data without any knowledge of the underlying radio.
Key differentiating features include an air-data-rate configurable from 0.3 kbps to 62.5 kbps across six spreading-factor settings, hardware flow control on the UART side via MD0 and AUX pins, and AT-command-set configuration of channel, address, transmit power and over-the-air encryption. The module supports 256-byte maximum packet payload, FEC (forward error correction) and configurable bandwidth from 7.8 kHz to 500 kHz.
From a technical-depth perspective, the module uses a Semtech SX1278-family transceiver with an SPI-controlled radio plus an on-board MCU bridge that exposes a simple 3.3V TTL UART interface (TXD, RXD, MD0, AUX) to the host. The integrated TCXO option provides improved frequency stability over industrial temperature ranges, and a hardware watchdog auto-resets the radio block on protocol timeout.
Typical applications include remote meter reading (water/gas/electric), agricultural sensor telemetry, industrial SCADA wireless extensions, smart-home gateways, drone telemetry links, and outdoor environmental monitoring stations. The wide operating range from -40C to +85C supports deployment in unconditioned enclosures, while the 3.3V logic interface mates directly with STM32, ESP32 and most 5V-tolerant MCUs via level shifters.
When designing with this part, allocate a UART with hardware flow control and reserve one GPIO for the MD0 pin to switch between AT-command and transparent modes. Ensure the antenna has clear line-of-sight and route the RF trace away from switching DC-DC nodes to preserve the -120 dBm sensitivity floor.
This page synthesizes distributor inventory, drop-in alternatives, and design considerations not aggregated on any single manufacturer or distributor site. Last verified against multiple data sources on 2026-10-14.
Alternatives de remplacement direct pour ATK-LORA-02 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATK-LORA-02 (même facteur de forme et même empreinte) — différant par Modulation, Module Type, Mounting Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATK-LORA-01
✅ Remplacement direct✓ En stock
$5.5 / unité
Voir la fiche technique →ATK-LORA-02-V1.0
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
Ai-Thinker RA-02
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
Ai-Thinker RA-01H
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATK-LORA-02 Spécifications (publiées par le fabricant)
| Manufacturer | ALIENTEK (ZhengDianYuanZi) |
| Module Type | LoRa wireless serial port module |
| Modulation | LoRa CSS chirp spread spectrum |
| Tx Power | up to +20 dBm (100 mW) |
| Rx Sensitivity | -120 dBm or better (low data rate) |
| Air Data Rate | 0.3 kbps to 62.5 kbps |
| Spreading Factors | 6 levels (SF6-SF12) |
| Bandwidth | 7.8 kHz to 500 kHz |
| Host Interface | UART (TXD/RXD), MD0, AUX, 3.3V TTL |
| Operating Voltage | 3.3 V DC typical |
| Package / Dimensions | SMD-15, 17 x 24 mm |
| Température de fonctionnement | -40C to +85C |
| Configuration | AT command set over UART |
| Max Packet Size | 256 bytes |
| Type de montage | Surface Mount (SMD) |
| Statut RoHS | Compliant (per JLCPCB listing) |
Configuration des broches de ATK-LORA-02
| Broche 1 | VCC — 3.3V DC power supply input |
| Broche 2 | GND — Ground reference |
| Broche 3 | TXD — UART transmit data output (3.3V TTL, to host RXD) |
| Broche 4 | RXD — UART receive data input (3.3V TTL, from host TXD) |
| Broche 5 | MD0 — Mode select: high = AT-command config, low = transparent communication |
| Broche 6 | AUX — Auxiliary / busy indicator: low when module is idle, high when busy |
| Broche 7 | RESET — Module reset input (active low, optional) |
| Broche 8 | ANT — RF antenna pad / SMA footprint |
| Broche 9 | NC — Not connected (per datasheet) |
| Broche 10 | NC — Not connected (per datasheet) |
| Broche 11 | NC — Not connected (per datasheet) |
| Broche 12 | NC — Not connected (per datasheet) |
| Broche 13 | NC — Not connected (per datasheet) |
| Broche 14 | NC — Not connected (per datasheet) |
| Broche 15 | NC — Not connected (per datasheet) |
Caractéristiques de puissance et thermiques
| Température de fonctionnement | -40C to +85C |
Paramètres d'alimentation et thermiques pour ATK-LORA-02 tels que publiés par le fabricant.
Applications typiques
ATK-LORA-02 convient pour 6 applications: Remote Meter Reading (Water/Gas/Electric), Agricultural Sensor Telemetry, Industrial SCADA Wireless Extension, Smart Home / Building Gateway, Drone / UAV Telemetry Link, Outdoor Environmental Monitoring.
Remote Meter Reading (Water/Gas/Electric)
The ATK-LORA-02's -120 dBm Rx sensitivity and +20 dBm Tx power deliver a >140 dB link budget, enabling multi-kilometer wireless meter reads in dense urban blocks where cellular coverage is poor. The 256-byte packet payload accommodates cumulative meter index plus timestamp in a single frame. The UART bridge means a low-cost STM32 host can poll meters without writing Semtech radio firmware - dramatically shortening time-to-market for AMI (advanced metering infrastructure) retrofits in residential and commercial deployments.
Recommandé
Agricultural Sensor Telemetry
Soil moisture, leaf wetness and weather stations in open fields need multi-year battery life and kilometer-scale range - exactly the ATK-LORA-02's sweet spot. The 0.3 kbps minimum air data rate with maximum spreading factor extends range to 5-8 km line-of-sight at the cost of airtime, which is acceptable for periodic sensor uploads. The UART host interface lets an ESP32 running on solar power transmit soil data without burdening its Wi-Fi stack, and the -40C to +85C operating range covers outdoor greenhouse and field deployments.
Recommandé
Industrial SCADA Wireless Extension
Factory floors often cannot run new RS-485 cables between PLCs and remote I/O; the ATK-LORA-02 serves as a transparent wireless replacement for the serial drop. The MD0/AUX hardware flow-control pins allow the host PLC to assert/deassert transmission windows deterministically, which is critical for deterministic SCADA polling cycles. The wide -40C to +85C range survives unconditioned control cabinets, and the UART interface plugs directly into any PLC serial port without protocol conversion.
Recommandé
Smart Home / Building Gateway
Low-power LoRa is increasingly used to bridge battery-powered door sensors, window contacts and HVAC thermostats back to a central home gateway that then exposes them via Wi-Fi or Ethernet. The ATK-LORA-02's UART host interface lets the gateway's ESP32 forward packets with a single serial read, and the AT-command configuration allows per-device encryption keys for tenant privacy. The small 17x24 mm SMD-15 footprint fits inside wall-switch back boxes alongside the mains-power supply.
Recommandé
Drone / UAV Telemetry Link
Drones flying beyond visual line-of-sight require a long-range, low-bandwidth telemetry downlink for position, battery and payload health. The ATK-LORA-02's >140 dB link budget sustains telemetry at altitudes where 433/868 MHz has clear Fresnel zone propagation, and its small 17x24 mm size keeps payload mass under 3 g. Pairing the module with a flight controller's UART spare port gives the ground station real-time aircraft state without interfering with the primary 2.4 GHz control link.
Recommandé
Outdoor Environmental Monitoring
Air-quality, noise and weather monitoring stations deployed in parks, riversides and along highways need weather-resistant, long-range radio that runs from solar+battery power for years unattended. The ATK-LORA-02's low standby current, wide temperature range and >140 dB link budget match these requirements. The UART host interface simplifies firmware: the host MCU simply wakes, reads sensors, writes the packet to UART, and returns to deep sleep while the LoRa modem handles over-the-air retransmission and FEC.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATK-LORA-02 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATK-LORA-01 | ATK-LORA-02-V1.0 | Ai-Thinker RA-02 | Ai-Thinker RA-01H |
|---|---|---|---|---|---|
| Brand | ALIENTEK | ALIENTEK (same-brand) | ALIENTEK (same-brand) | Ai-Thinker (cross-brand) | Ai-Thinker (cross-brand) |
| Package | SMD-15, 17x24 mm | SMD-15, 17x24 mm - same | SMD-15, 17x24 mm - same | SMD-15, 17x24 mm - same | SMD-15, 17x24 mm - same |
| Host Interface | UART (TXD/RXD/MD0/AUX) | UART (transparent only) | UART (TXD/RXD/MD0/AUX) - same | SPI (direct radio) | SPI (direct radio) |
| RF Chipset | Semtech SX1278 family | Semtech SX1276/78 family | Semtech SX1278 family | Semtech SX1278 | Semtech SX1276 |
| Tx Power | up to +20 dBm | up to +20 dBm | up to +20 dBm | up to +17 dBm | up to +20 dBm |
| Rx Sensitivity | -120 dBm or better | -120 dBm or better | -120 dBm or better | -120 dBm or better | -123 dBm or better |
| Air Data Rate | 0.3 - 62.5 kbps | 0.3 - 62.5 kbps | 0.3 - 62.5 kbps | 0.3 - 62.5 kbps | 0.018 - 62.5 kbps |
| Configuration Method | AT commands over UART | Transparent only (no AT) | AT commands over UART | SPI register access | SPI register access |
| Lifecycle Status (2026-10-14) | Obsolete (EOL) | Obsolete (EOL) | Obsolete (EOL) | Active (in production) | Active (in production) |
Principaux différenciateurs
- On-board UART bridge eliminates host-side radio firmware (vs Ai-Thinker RA-02)
- Hardware flow-control pins (MD0, AUX) for deterministic mode switching (vs ATK-LORA-01)
- Wider air data rate range with 256-byte packets (vs Ai-Thinker RA-02)
Notes de conception
The ATK-LORA-02 module must be powered from a clean 3.3V rail capable of sourcing at least 200 mA peak during +20 dBm transmit bursts. Place a 10 uF tantalum plus a 100 nF ceramic bypass capacitor within 5 mm of the VCC pin. Long wire harnesses between host board and module can cause voltage droop that pulls the radio out of regulation; use a star-topology 3.3V trace or a dedicated LDO (such as an MCP1700 or AMS1117-3.3) for the module even if the host MCU shares the same rail.
Route the host-side UART traces (TXD, RXD, MD0, AUX) as short as possible and away from any switching DC-DC nodes or crystal oscillator traces to preserve UART signal integrity. The ANT pad must be routed with a 50 ohm controlled-impedance trace on the outer PCB layer and surrounded by a continuous ground pour on the next inner layer - no signal traces may cross beneath the antenna trace. A SMA or IPEX connector footprint should be placed at the edge of the PCB with a clear keep-out zone of at least 5 mm to avoid detuning.
Do not leave MD0 floating - it must be pulled to a defined logic level by the host MCU at all times, including during reset, or the module may enter an undefined mode. AUX is NOT a simple busy flag: it is an open-drain output that can stay high for several milliseconds after a transmit completes; do not poll it from a tight ISR loop without debounce. According to the ALIENTEK manual section 2.3, firmware that reads AUX as a falling edge in interrupt context must mask the interrupt for at least 5 ms after first triggering.
Although the ATK-LORA-02's UART operates at 3.3V TTL, the long external antenna cable combined with the host enclosure can act as a common-mode antenna and corrupt UART bytes during high-power Tx. Adding a small common-mode choke (e.g. 90 ohm at 100 MHz) on TXD and RXD near the host MCU improves EMC immunity. Avoid running UART lines parallel to and within 5 mm of the antenna trace; cross them at right angles if they must meet.
Informations de conformité
RoHS compliance confirmed by JLCPCB SMT library entry; REACH and halogen-free status not stated in the manufacturer datasheet. Not AEC-Q100 qualified (consumer/industrial module, not automotive grade).
