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2026-09-06T07:58:00Z

Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

== Summary ==
The SX1262-LoRa-DTU-xF is a wireless data transfer unit based on the Semtech SX1262 chip. It converts RS232, RS485 or RS422 signals into LoRa RF data in the sub-GHz band, with a range of up to 5 km and AES encryption.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL23593 WSAL23593 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]
* [https://shop.jw-tech.eu/p/WSAL23594 WSAL23594 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]
* [https://shop.jw-tech.eu/p/WSAL23596 WSAL23596 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]
* [https://shop.jw-tech.eu/p/WSAL23597 WSAL23597 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]
* [https://shop.jw-tech.eu/p/WSAL23797 WSAL23797 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]
* [https://shop.jw-tech.eu/p/WSAL23798 WSAL23798 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]
* [https://shop.jw-tech.eu/p/WSAL23799 WSAL23799 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]
* [https://shop.jw-tech.eu/p/WSAL23800 WSAL23800 – Rail-mount SX1262 LoRa Data Transfer unit, RS232/RS485/RS422 to LoRa, Suitable for Sub-GHz band]

== Technical overview ==
* Aluminum-alloy enclosure, dimensions 77.0 × 24.0 × 64.2 mm; DIN-rail mounting via an embedded 35 mm latch on the rear.
* Interfaces: RS485 (half-duplex), RS232 (full-duplex, DB9 plug) and RS422 (full-duplex); only one interface can be active per unit; simultaneous conversion of all three is not possible.
* RF parameters: sub-GHz bands (410–510 MHz or 850–930 MHz), max transmit power +22 dBm, receive sensitivity −148 dBm, LoRa modulation, AES encryption.
* Power supply via DC 12 V adapter or 6-pin terminal (6–28 V, GND); overvoltage, overcurrent and reverse-polarity protection provided.
* Operating temperature 0–85 °C; humidity range 5–95 % RH.
* LED indicators: PWR (steady on when powered), TXD (on while transmitting), RXD (on while receiving).
* KEY button: within the first 3 s after power-on, hold for 2 s to enter firmware-update mode (from FW 1.1); after 3 s, tap to switch among RS485/RS232/RS422; hold until RXD turns off to restore factory defaults and reboot.
* From firmware 1.2, RS485 is the default interface, default baud rate 9600, mode 8N1.
* Supports point-to-point, point-to-multipoint and multi-level relay networking to extend wireless range.
* RSSI output (AT+RSSI=1) appends a hexadecimal RSSI value to each transmitted packet; LBT (Listen Before Talk, AT+LBT=1) monitors channel noise before transmission and delays sending by up to 2 s if noise exceeds threshold.

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
AT+RSSI=1
AT+LBT=1
</syntaxhighlight>

== Notes and version constraints ==
* This device does not support LoRaWAN; it communicates only with other SX1262-LoRa-DTU-xF or USB-TO-LoRa-xF units.
* At least two DTU units are required to form a functional radio network.
* Do not press the KEY button within the first 3 seconds after power-on; accidental presses may trigger the update mode.
* If packets are lost or garbled: reduce data volume and transmit frequency (recommendation: max. 240 characters/s) and consider flashing the latest firmware.
* The exact regional frequency-band selection (410–510 MHz vs. 850–930 MHz) must be confirmed locally before deployment.
* The stated range (up to 5 km) depends heavily on environment, antenna and setup conditions; no guarantee without a field test.

== Source and revision record ==
* [https://www.waveshare.com/wiki/SX1262-LoRa-DTU-xF SX1262-LoRa-DTU-xF - Waveshare Wiki]
* Source revision: 104313
* Captured: 2026-09-04T03:10:19+00:00
* SHA-256: <code>94b53612bff7acf0e7d01ae08ab942b88538d0ac301e7b9a1b5dabe5f080b441</code>

WSAL23593 – SX1262-LoRa-DTU-xF/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex