The Ebyte E22-230T22U is a 230MHz 22dBm 5km USB LoRa wireless serial adapter powered by Semtech SX1262/SX1268 chipsets, featuring plug-and-play PC connectivity, LBT, auto-relay, AES keys, and full compatibility with the E22-230T series.
| Parameter Name | Parameter Value | Technical Details |
|---|---|---|
| RF Chipset | Semtech SX1262 / SX1268 | New-generation LoRa spread spectrum transceiver |
| Operating Frequency | 220.125 - 236.125 MHz | Default 230.125 MHz, high-diffraction band |
| Transmitting Power | 22 dBm | Max RF output power approx. 160 mW |
| Communication Distance | 5.0 km | Measured line-of-sight distance in open area |
| Hardware Interface | USB Type-A | Plug-and-play USB to UART serial communication |
| Advanced Wireless Features | LBT, Auto Relay, AES Key, RSSI | Listen Before Talk, hardware encryption, signal quality output |
| System Compatibility | Full E22-230T / 400T / 900T Series | Seamless interoperability with E22 embedded modules |
| Maintenance & Configuration | Wireless Config & USB IAP Upgrade | Supports over-the-air config and USB firmware updates |
USB Plug-and-Play — Direct PC/Host Connection, No Driver Complexity
The standard USB form factor allows direct connection to any PC, Raspberry Pi, or USB-host embedded system without additional UART-to-USB adapters. The 5V USB IO voltage is natively compatible with standard USB ports. Supports USB IAP (In-Application Programming) for online firmware upgrades without disassembly — critical for field-deployed units.
Automatic Relay (Trunking) — Range Extension Without Infrastructure
Built-in automatic relay mode enables any E22-230T22U to transparently re-transmit packets, extending effective range beyond the 5km direct link. Multiple relay hops can be chained without additional gateways. Combined with WoR (Wake-on-Radio) mode, relay nodes can be battery-powered for flexible deployment in remote locations.
LBT, AES Encryption, RSSI & Wireless Remote Configuration
LBT (Listen Before Talk) monitors channel occupancy before transmission to avoid collisions in shared-spectrum environments — compliant with ETSI EN 300 220 duty cycle requirements. AES-based communication key encryption prevents unauthorized access and eavesdropping. RSSI byte reporting enables link quality monitoring. Wireless remote configuration allows parameter changes (address, channel, power, baud rate) over-the-air without physical access to deployed units.
High Speed & Long Range — Cross-Band E22 Series Compatibility
Supports baud rates from 1200 to 115200bps with configurable sub-packet lengths for latency vs. throughput optimization. Fully compatible with E22-230T/400T/900T series modules, enabling mixed-frequency network deployments where 230MHz, 433MHz, and 915MHz nodes communicate through a common protocol stack.
Practical Application Scenarios
1. PC-Based Field Engineering and SCADA Wireless Diagnostics
Field technicians frequently need to commission or troubleshoot remote Sub-GHz sensor networks without opening cabinet enclosures or wiring RS485 conversion boards. Plugged directly into a rugged laptop via USB, the E22-230T22U acts as a wireless master node. Engineers can wirelessly reconfigure operating parameters, execute IAP firmware updates, and query telemetry data from field-deployed E22-230T embedded modules across distances up to 5km.
2. Deep Subterranean Tunnel and Obstacle-Heavy Asset Tracking
Underground utility corridors and urban concrete structures attenuate high-frequency radio waves rapidly. The 230MHz frequency band delivers exceptional diffraction and physical penetration characteristics. Connected to central edge gateways via USB, the E22-230T22U works in tandem with E22 auto-relay nodes to gather telemetry from deep subterranean power vaults and concrete-enclosed environmental sensors where standard 868MHz or 915MHz signals fail.
3. Secure Long-Range Industrial Pipeline Pressure Monitoring
Critical oil, gas, and water distribution networks demand tamper-proof, collision-resistant wireless links over long distances. Utilizing hardware-level AES communication key encryption alongside Listen Before Talk (LBT) anti-collision scanning, the E22-230T22U ensures secure data transmission from remote monitoring stations back to central supervisory hosts without packet corruption or unauthorized eavesdropping.
FAQ Section
1. How does the E22-230T22U establish wireless communication with embedded E22 series modules?
Because the E22-230T22U is built on the same Semtech SX1262/SX1268 core and E22 protocol firmware as embedded modules, setting matching air rates, operating frequencies within the 220.125-236.125MHz range, network addresses, and AES encryption keys allows the USB adapter to communicate transparently with any embedded E22-230T module.
2. What propagation advantages does the 230MHz band offer compared to standard 868MHz or 915MHz bands?
The 230MHz frequency band features longer electromagnetic wavelengths, providing superior signal diffraction around physical obstacles and lower RF attenuation through dense foliage, concrete walls, and earth structures. This makes it ideal for complex non-line-of-sight (NLOS) industrial environments.
3. How do LBT and AES key encryption enhance wireless industrial reliability?
Listen Before Talk (LBT) forces the module to scan the channel for existing RF traffic prior to transmitting, preventing packet collisions in dense radio environments. Simultaneously, AES hardware encryption encodes serial payloads to prevent unauthorized data tampering or interception across long-range wireless links.
