TLM922S - LoRaWAN Module 862-932MHz SX1272 | Kiwi Technology
MPN: TLM922S ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
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| 500 | $0 | $0.00 |
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TLM922S Overview
A LoRa module is a wireless subsystem that implements LoRa (Long Range) spread-spectrum modulation, part of the LPWAN (Low-Power Wide-Area Network) family within the broader wireless connectivity hierarchy that includes sub-GHz RF transceivers, RF modules, and IoT communication devices. LoRaWAN, the networking protocol layered on top of LoRa PHY, is standardized and certified by the LoRa Alliance, of which Kiwi Technology is a listed member.
Key features include full on-chip integration of all RF filters, which removes the need for costly external SAW and IF filters; a UART AT-command interface that lets any host MCU control the module without RF expertise; LoRaWAN certification (FCC ID 2AKIBTLM922S) for regulatory compliance; and very low power consumption designed for battery-powered nodes operating for years on a single cell.
Technically, the SX1272 handles the LoRa modulation and RF front end while the Cypress S6E1C32 Cortex-M0 core runs the LoRaWAN stack, so the module appears to the host as a simple serial peripheral. This partitioning minimizes host firmware complexity and shortens time to market for IoT and M2M products. Certified output power is approximately 19.23 mW to 19.32 mW across the 920.6-928 MHz segment per the Japanese radio-law test report, with line-of-sight range on the order of 10 km typical for US915-class deployments.
Typical applications include LoRaWAN IoT sensor nodes, smart metering infrastructure, asset tracking tags, smart-city endpoints, and industrial M2M telemetry, where long range and multi-year battery life outweigh raw data throughput.
Design consideration: keep the antenna feedline short and matched to 50 ohms, and budget a clean 3.3 V supply with low ripple, since PA burst currents on LoRa transmit edges can droop marginal rails and cause frame errors.
This page synthesizes distributor sourcing data, certification records, and practical integration notes not consolidated in the manufacturer specification document.
Drop-in alternatives for TLM922S — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLM922S-P01A
✅ Drop-In📋 Reference alternative (not in catalog)
TLM922S Specifications (manufacturer-published)
| Product Type | LoRa / LoRaWAN wireless module |
| Part Variant | TLM922S-P01A |
| Radio Transceiver | Semtech SX1272 |
| Host MCU | Cypress S6E1C32, 32-bit ARM Cortex-M0 |
| Frequency Range | 862 MHz to 932 MHz |
| Modulation | LoRa spread spectrum |
| Protocol Stack | LoRaWAN (certified) |
| Max Output Power | Up to +20 dBm |
| Certified Output Power | 19.23 mW (920.6-923.4 MHz) / 19.32 mW (922.4-928 MHz) |
| Typical Range | ~10 km line of sight (US915-class) |
| Host Interface | UART, AT-command set |
| RF Filters | Fully integrated (no external SAW/IF filters) |
| FCC ID | 2AKIBTLM922S |
| Certification | LoRaWAN Certified, FCC |
TLM922S Interfaces & Connectors
No manufacturer-published interface list is available for TLM922S. Refer to the manufacturer documentation for connector and header details.
Refer to the manufacturer documentation for the full expansion header pinout and connector pin numbering.
Typical Applications
TLM922S is suitable for 6 applications: LoRaWAN IoT Sensor Nodes, Smart Metering Infrastructure, Asset Tracking, Smart City Endpoints, Industrial M2M Telemetry, Prototyping and Embedded Development.
LoRaWAN IoT Sensor Nodes
The TLM922S is purpose-built for battery-powered LoRaWAN endpoints: its Semtech SX1272 radio delivers up to +20 dBm with ~10 km line-of-sight reach, while the integrated Cypress S6E1C32 Cortex-M0 runs the LoRaWAN stack so the host MCU only issues AT commands over UART. Ultra-low-power, low-voltage operation supports multi-year battery life for environmental sensors, water/gas meters, and parking or occupancy detectors. Because all RF filters are on-module, a sensor node PCB needs only the module, an antenna, and host firmware, dramatically shortening the design cycle. The main trade-off is LoRa's low data rate, so reserve this module for small, infrequent telemetry payloads rather than streaming data.
Recommended
Smart Metering Infrastructure
Utility metering demands long range, long battery life, and certified RF - exactly the TLM922S profile. With 862-932 MHz coverage and LoRaWAN certification, the module joins public or private LoRaWAN networks without per-region RF re-certification for covered bands, and its ~10 km LOS link budget reaches meters in basements and outbuildings via repeaters or high-spreading-factor links. The UART AT-command interface lets the metering MCU (8-bit or 32-bit) wake the module only for scheduled reporting, minimizing average current. On-chip filtering removes SAW filter BOM cost at meter volumes. Designers should size the 3.3 V rail for PA burst currents during +20 dBm transmit windows to avoid brown-out resets.
Recommended
Asset Tracking
Asset trackers transmit small position/status payloads infrequently, matching LoRaWAN and the TLM922S strengths: certified +20 dBm output maximizes link budget from vehicles, containers, or livestock tags, and the module's ultra-low-power design preserves battery life between GPS fix and transmit cycles. Coverage across 862-932 MHz lets one hardware design serve US915-class and other sub-GHz regional plans, reducing SKUs for global fleets. Integration is trivial - UART AT commands from any tracker MCU - and the integrated filters avoid external RF tuning per PCB revision. For moving assets, expect reduced range versus fixed nodes; plan gateway density or raise spreading factor for margin.
Recommended
Smart City Endpoints
Kiwi Technology positions the TLM922S as infrastructure-grade for smart-city M2M: streetlight control, waste-bin fill sensors, air-quality nodes, and kiosks. The LoRaWAN certification and FCC grant (2AKIBTLM922S) satisfy the regulatory layer for covered bands, and the ~10 km line-of-sight reach lets a handful of gateways cover a district. Because the module encapsulates the complete stack behind AT commands, city-application firmware teams can iterate on application logic without RF expertise, and OTA-like reconfiguration is done through LoRaWAN downlinks. Main-powered endpoints can run at Class C for low-latency downlink control; battery endpoints should use Class A to preserve lifetime.
Recommended
Industrial M2M Telemetry
In factories and utility plants, the TLM922S links remote pumps, tanks, and environmental monitors to LoRaWAN backends where running cable or cellular service is uneconomical. The 862-932 MHz band penetrates metal-dense environments better than 2.4 GHz, and +20 dBm with integrated filtering sustains reliable links through partially obstructed paths. The module's low-voltage, ultra-low-power operation suits both mains-powered RTUs and battery sentries; its UART interface integrates cleanly with legacy PLC-adjacent controllers. Estimated benefit: commissioning a LoRaWAN telemetry point is largely firmware work, avoiding trenching and RF licensing for covered ISM bands. Validate antenna placement per site, since industrial RF noise floors vary widely.
Recommended
Prototyping and Embedded Development
The TLM922S is unusually friendly to prototyping: the AT-command UART interface is terminal-interactive, so engineers can join a LoRaWAN network and send test payloads from a PC serial terminal without writing firmware first. The open-source LoRaWAN_TLM922S Arduino library on GitHub wraps the command set for rapid sketches, and the public FCC-filed product specification documents the full command reference. This makes the module an effective teaching and evaluation platform for LoRaWAN before committing to custom hardware. For bench work, add a current-limited 3.3 V supply and an SMA-to-module antenna pigtail, and log UART traffic to correlate AT commands with gateway-side frame reception.
Recommended
Recommended Products Summary
Engineering reference data for TLM922S — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLM922S-P01A |
|---|---|---|
| Package | Kiwi Technology LoRa module (integrated module) | Identical module package - same family |
| Brand | Kiwi Technology Inc. | Kiwi Technology Inc. (same brand) |
| Frequency Range | 862-932 MHz | 862-932 MHz |
| Radio Transceiver | Semtech SX1272 | Semtech SX1272 |
| Host MCU | Cypress S6E1C32 (Cortex-M0) | Cypress S6E1C32 (Cortex-M0) |
| Max Output Power | Up to +20 dBm | Up to +20 dBm |
| Certification | LoRaWAN certified, FCC 2AKIBTLM922S | LoRaWAN certified, FCC 2AKIBTLM922S |
| Host Interface | UART AT commands | UART AT commands |
Key Differentiators
- Fully certified LoRaWAN endpoint (vs Bare SX1272/SX1276 transceiver designs)
- No external SAW/IF filters required (vs Discrete SX1272 transceiver implementations)
- Stack-on-module AT-command architecture (vs Host-run LoRaWAN stack (e.g., on a raw SX1276 + MCU))
Design Notes
Estimated: at +20 dBm output, SX1272-class PA burst currents typically reach tens of milliamps in short transmit bursts. Size the 3.3 V rail and its bulk capacitance (e.g., 10 uF ceramic close to the module supply pin) so voltage droop during TX bursts stays within the module tolerance; marginal rails are the most common cause of LoRa frame errors and module resets. Confirm the exact supply voltage range in the TLM922S product specification, since the public excerpts do not state it.
Keep the antenna feed as short as possible and route it as a 50-ohm controlled-impedance trace with a solid ground reference underneath. Because all SAW/IF filtering is integrated on the module, your PCB contributes the only unfiltered parasitics - avoid routing UART, reset, or switching-regulator traces parallel to the antenna feed, and keep the module's keep-out area free of copper pours and fast digital edges to preserve the certified RF performance.
Do not treat the TLM922S as a bare transceiver: the LoRaWAN stack lives on the internal Cypress S6E1C32 and is managed via AT commands over UART, so re-implementing MAC-layer behavior on the host will conflict with module firmware. For development, use the terminal-interactive mode or the LoRaWAN_TLM922S Arduino library first, verify join and uplink on a gateway, and only then integrate host logic. Also confirm which regional channel plan your firmware build targets before field deployment.
Compliance Information
Verified certifications: LoRaWAN Certified (LoRa Alliance marketplace listing) and FCC certification under FCC ID 2AKIBTLM922S (Kiwi Technology Inc.), plus a Japanese radio-law test report for the 920 MHz band. RoHS/REACH/lead-free status not stated in retrieved data.
