The Ebyte E30-433T20D is a 433MHz 20dBm DIP wireless data transceiver module based on the Silicon Labs SI4463 RF chip, delivering up to 2,500m transmission range, -121 dBm sensitivity at 5 kbps, flexible UART communication (1200-115200 baud), and CE/FCC/RoHS compliance for industrial IoT telemetry and smart metering.
| Technical Parameter | E30-433T20D Specification | Remarks / Details |
|---|---|---|
| Product Model | E30-433T20D | Sub-GHz DIP RF Transceiver Module |
| Main RF Chipset | Silicon Labs SI4463 | High-performance, low-power Sub-1GHz RF transceiver |
| Operating Frequency | 425 to 450.5 MHz | Default center frequency: 433 MHz |
| Transmitting Power | 10 to 20 dBm | Default 20 dBm (approx. 100 mW) |
| Receiving Sensitivity | -121 dBm | Measured at 5 kbps air data rate |
| Communication Distance | Up to 2500 meters | Open line-of-sight with 5 dBi antenna at 2m height |
| Communication Interface | UART (TTL) | Baud rate: 1200 to 115200 bps (default 9600 bps) |
| Package & Form Factor | DIP (In-line Plug-in) | Dimensions: 21 x 36 mm |
| Antenna Interface | SMA-K Connector | Standard female thread internal hole connector |
| Compliance Certifications | CE, FCC, RoHS | International RF and environmental compliance |
| RF Parameter | Value | Remark |
|---|---|---|
| Working Frequency | 425–450.5 MHz | Default: 433 MHz |
| Transmit Power | 10–20 dBm | Default: 20 dBm (100 mW) |
| Rx Sensitivity | −121 dBm | Air data rate: 5 kbps |
| Air Data Rate | 1–25 kbps | Default: 5 kbps |
| Test Range | 2,500 m | Open field, 5 dBi antenna, 2 m height, 2.4 kbps |
| Hardware Parameter | Value | Remark |
|---|---|---|
| Dimensions | 21 × 36 mm | Without SMA connector |
| Antenna | SMA-K | External antenna port |
| Interface | UART | Baud: 1200–115200, default 9600 |
| Package | DIP | Through-hole, breadboard compatible |
| Buffer | 512 bytes | Auto sub-packet: 58 bytes/packet |
| Electrical Parameter | Min. | Typ. | Max. | Unit | Condition |
|---|---|---|---|---|---|
| Supply Voltage | 2.3 | 5.0 | 5.2 | V | — |
| Logic Level | 2.5 | 3.3 | 3.6 | V | — |
| Tx Current | 82 | 89 | 98 | mA | 20 dBm |
| Rx Current | 15 | 16 | 17 | mA | — |
| Sleep Current | 3 | 4 | 5 | μA | WoR mode |
| Operating Temp. | −40 | 25 | +85 | ℃ | Industrial grade |
| Storage Temp. | −40 | 25 | +125 | ℃ | — |
| Humidity | 10 | 60 | 90 | %RH | Non-condensing |
FEC Forward Error Correction — Reliable Links in Noisy Environments
The E30-433T20D integrates a hardware FEC (Forward Error Correction) engine on the SI4463 chip. This automatically detects and corrects bit errors caused by interference or multipath fading, maintaining data integrity without retransmission overhead — critical for industrial sensor networks and utility metering where packet loss is unacceptable.
Wake-on-Radio (WoR) — Ultra-Low Power Operation
Sleep current as low as 3–5 μA with hardware WoR support. The module wakes automatically upon detecting a valid preamble, enabling battery-powered deployments with multi-year lifespans. Ideal for remote agricultural sensors, environmental monitors, and any IoT node where mains power is unavailable.
Drop-in UART Interface — Zero RF Expertise Required
Transparent serial transmission via standard UART (TTL, 3.3 V logic). No RF register programming needed — configure via simple AT commands. Compatible with all E30-series modules for easy network expansion. DIP package fits standard 2.54 mm breadboards and perfboards for rapid prototyping.
Practical Application Scenarios
1. Smart Metering and Automated AMR Infrastructure
In municipal water and gas metering networks, meters installed in underground basements require high RF obstacle penetration. The Ebyte E30-433T20D utilizes the Silicon Labs SI4463 RF chip and 433MHz Sub-GHz frequency band to achieve -121 dBm sensitivity. Integrated into smart meters via its UART interface, it communicates wirelessly with centralized Ebyte wireless DTU data concentrators, routing meter telemetry across a 2.5 km line-of-sight radius to utility management servers without complex cable routing.
2. Agricultural Environmental Monitoring and Remote Precision Irrigation
For outdoor smart agriculture, distributed soil moisture and weather sensors need long-range, low-power telemetry. Connected to microcontrollers via its DIP package and SMA-K antenna connector, the E30-433T20D transmits field telemetry up to 2,500 meters at 20 dBm (100 mW) power. It interfaces with Ebyte industrial PLC controllers and solar-powered IO modules, ensuring reliable real-time sensor updates to automate drip irrigation valves in vast farming fields.
3. Industrial Equipment Telemetry and Remote Modbus RTU Data Transmission
In factory automation and power distribution cabinets, PLC control units require wireless serial bridging to eliminate expensive RS-485 cable installations. Operating across 425-450.5 MHz with configurable UART baud rates up to 115200 bps, the E30-433T20D functions as a plug-and-play serial pass-through link. When deployed alongside Ebyte RS485/RS232 serial gateways, it enables zero-packet-loss Modbus RTU telemetry between remote equipment sensors and central SCADA control centers.
FAQ Section
1. What are the key performance advantages of using the Silicon Labs SI4463 chip in the E30-433T20D compared to general FSK modules?
The Silicon Labs SI4463 IC provides exceptional RF performance, achieving high receiver sensitivity down to -121 dBm at 5 kbps air rate and strong adjacent channel selectivity. This allows the E30-433T20D to deliver robust anti-interference capability, stable 20 dBm output power, and reliable multi-channel transmission across the 425 to 450.5 MHz Sub-GHz band in noise-heavy industrial environments.
2. How do I configure the UART baud rate and operating parameters of the E30-433T20D module?
The E30-433T20D features a standard UART interface supporting baud rates from 1200 to 115200 bps (defaulted at 9600 bps). Engineers can configure parameters such as frequency channel, transmit power level (10 to 20 dBm), and air data rate via standard AT commands or Ebyte dedicated graphical configuration software through a TTL-to-USB converter connected to a PC.
3. Does the E30-433T20D hold international RF certifications for OEM product integration?
Yes. The E30-433T20D complies with international regulatory standards and holds official CE, FCC, and RoHS certifications. This certification compliance significantly simplifies the global export and compliance testing process for OEM equipment manufacturers integrating Ebyte wireless modules into industrial products targeted for European and North American markets.
