The EBYTE E22-900T30S is a high-performance 1W (30dBm) SMD LoRa wireless serial port module (UART) operating at 850.125~930.125 MHz (covering 868MHz/915MHz) based on the Semtech SX1262 RF chip, delivering ultra-long-range data transmission up to 10,000 meters (10km) with multiple transmission modes for industrial IoT applications.
| Parameter Category | Technical Specifications (E22-900T30S) |
|---|---|
| Brand / Model | EBYTE E22-900T30S |
| RF Chip | Semtech SX1262 |
| Operating Frequency | 850.125 to 930.125 MHz (Supports 868MHz / 915MHz) |
| Transmit Power | 30 dBm (Approx. 1W) |
| Communication Distance | 10000 meters (10 km in open and clear air) |
| Communication Interface | UART Serial Port |
| Package Type | SMD (Surface Mount Device) |
| Antenna Interface | SMD type pad |
| Dimensions | 25 * 40.5 mm |
[Introduction]：E22-900T30S-V2 is a new generation of LoRa wireless module, based on the RF chip wireless serial port module (UART), with a variety of transmission modes.
Brand Name:EBYTE
Origin:Mainland China
Condition:New
Type:Drive IC
Model Number:E22-900T30S
Package:SMD
Size:25 * 40.5 mm
Power:30dBm
Frequency:850.125~930.125 MHz
Distance:10000m
Interface:UART
RF connecor:SMD
| RF Parameter | Value | Remark |
|---|---|---|
| Working frequency band | 850.125 to 930.125MHz | Support ISM band |
| Transmit power | 30 dBm | - |
| Receiving sensitivity | -147dbm | - |
| Air speed | 2.4 K ~62.5 KBPS | User programming control |
| Measured distance | 10km | Clear and open, antenna gain 5dBi, antenna height 2.5 meters, air speed 2.4 KBPS |
| Hardware Parameter | Value | Remark | |
|---|---|---|---|
| Size | 25 * 40.5 mm | ||
| Antenna form | IPEX/Stamp hole | Equivalent impedance is about 50 ω | |
| Communication port | UART serial port | TTL level | |
| Package | Patch type |
| Electrical parameter | Min. | Typ. | Max. | Unit | Condition | |
|---|---|---|---|---|---|---|
| Tower supply voltage | 3.3 | 5.0 | 5.5V | ≥5.0V can ensure the output power | ||
| Communication level | - | 3.3 | - | V | Using 5V TTL recommended level conversion | |
| Emission current | - | 650 | - | MA | Instantaneous power consumption | |
| Receiving current | - | 16 | - | mA | ||
| Sleep current | - | 2.0 | - | uA | Software is disabled | |
| Working temperature | -40 | 20 | +85 | ℃ | Industrial design | |
| Working humidity | 10 | 60 | 90 | % | ||
| Storage temperature | -40 | 20 | +125 | ℃ |
Practical Application Scenarios
1. High-Density Industrial Automated Guided Vehicles (AGVs) and Warehouse Logistics
In modern smart warehousing, fleet management systems require highly reliable telecontrol and real-time telemetry data loops to prevent collisions and optimize paths. Operating on the Sub-GHz ISM band, the module leverages the Semtech SX1262 RF chip and LoRa spread spectrum modulation to achieve exceptional anti-interference capabilities and RF link budgets. In environments cluttered with metallic racking, concrete structures, and transient electromagnetic noise from heavy machinery, traditional 2.4GHz Wi-Fi suffers from severe multi-path fading and signal attenuation. This module provides stable UART serial communication for low-latency command distribution and telemetry reporting, ensuring continuous operation of AGV fleets over long distances without data loss.
2. Long-Range Remote Environmental Telemetry and Smart Agriculture
Smart farming and environmental monitoring rely heavily on wide-area sensor networks deployed across vast geographic regions. Thanks to its high transmit power of 30dBm (1W) and high receiving sensitivity of -147dBm, this RF module facilitates ultra-long-range data transmission up to 10km in open-field environments. Field nodes equipped with sensors (e.g., soil moisture, temperature, and meteorological instruments) utilize the patch-type SMD module to transmit telemetry packets directly to a centralized gateway. The exceptionally low sleep current of 2.0uA dramatically minimizes the power budget of battery-powered field nodes, significantly extending the operational lifespan of the distributed sensor network.
3. Smart Grid Distribution Automation and Remote Power Metering
Utility companies require robust, deterministic, and highly penetrative wireless links to interface with pole-mounted circuit breakers, transformer monitoring units, and remote smart meters over dense urban or complex rural topographies. By operating within the 850.125 to 930.125 MHz frequency range (covering standard 868MHz and 915MHz bands), the module avoids the congested 2.4GHz spectrum while offering superior signal penetration through concrete walls and building facades. The built-in hardware parameters allow customizable air data rates from 2.4kbps to 62.5kbps via user programming control. This flexibility enables engineers to optimize the trade-off between communication distance and data throughput for transmitting critical Modbus RTU telemetry packets across power distribution grids.
FAQ Section
1. How does the E22-900T30S-V2 maintain stable link performance and combat multi-path fading in harsh industrial IoT environments?
The module utilizes the Semtech SX1262 transceiver running LoRa spread spectrum modulation instead of traditional FSK technology. LoRa technology inherently offers superior co-channel rejection and a high link budget, allowing the RF signal to be demodulated even when the received signal strength is up to 20dB below the noise floor. Combined with a maximum transmit power of 30dBm (1W) and a ultra-low receiving sensitivity of -147dBm, it provides excellent building penetration and immunity against electromagnetic interference, effectively mitigating multi-path fading caused by concrete structures and metallic obstructions.
2. Can the UART interface connect directly to a 5V microcontroller, and what are the electrical constraints?
No, the native communication level of the module's UART serial port is 3.3V TTL. When interfacing with a 5V microcontroller (such as certain traditional industrial PLCs or older 8-bit MCUs), an external level shifter or a voltage divider network is highly recommended on the RX/TX lines to prevent over-voltage degradation of the RF module's digital pins. Additionally, while the power supply voltage can accept up to 5.5V, ensuring a stable VCC supply of at least 5.0V is mandatory to achieve the full, rated 30dBm (1W) instantaneous instantaneous RF output power during transmission cycles.
3. What is the impact of adjusting the air data rate on the actual communication range and system power consumption?
The air data rate of this module can be dynamically configured via user programming control from 2.4kbps up to 62.5kbps. Lowering the air data rate (e.g., to 2.4kbps) maximizes the symbol duration and increases the processing gain of the receiver, which is necessary to achieve the maximum advertised 10km open-field communication distance. However, a lower data rate extends the over-the-air time-on-air for each packet, which consequently increases the overall energy consumption per transmission cycle. Conversely, higher air data rates decrease latency and power consumption per packet but reduce the maximum effective line-of-sight range.
4. How does the V2 hardware design optimize power management for remote, battery-powered endpoint nodes?
The E22-900T30S-V2 features advanced power domain isolation, allowing the software to disable the RF transceiver and internal circuitry completely during idle periods, bringing the sleep current down to a mere 2.0uA. In a typical industrial telemetry duty cycle where the node remains in sleep mode for the majority of the day and wakes up periodically via external interrupts or scheduled timers to transmit brief sensor payloads, this low quiescent draw preserves battery capacity. It enables endpoints to remain field-operational for multiple years without manual battery replacement.