Chip: SI4463 (Silicon Labs)
Frequency: 425–450.5 MHz (default 433 MHz)
Tx Power: 10–20 dBm (default 20 dBm / 100 mW)
Rx Sensitivity: −121 dBm @ 5 kbps air rate
Range: Up to 2,500 m (open field, 5 dBi antenna, 2 m height)
Interface: UART (1200–115200 baud, default 9600)
Package: DIP, 21 × 36 mm, SMA-K antenna connector
Certifications: CE, FCC, RoHS
Applications: Industrial telemetry, smart metering, agricultural sensors, asset tracking, IoT sensor networks
| 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.
Ideal Applications
Frequently Asked Questions
Q: Is the E30-433T20D compatible with other E30 modules?
A: Yes. All E30-series modules share the same transparent UART protocol and default parameters (433 MHz, 9600 baud, 5 kbps air rate), making them fully interoperable out of the box.
Q: Does this module support LoRaWAN?
A: No. The E30-433T20D uses the SI4463 FSK/OOK chip and operates as a private point-to-point or star-topology RF link. It does not support the LoRaWAN stack. For LoRaWAN, see Ebyte's E22 or E77 series.
Q: What is the maximum reliable range?
A: Up to 2,500 m in open field conditions with a 5 dBi antenna at 2 m height and 2.4 kbps air rate. Urban or obstructed environments will reduce range; use the lowest air rate and highest Tx power for maximum link budget.
Q: Can I use this module at 3.3 V?
A: The supply voltage range is 2.3–5.2 V, and the logic level is 3.3 V (2.5–3.6 V). It is fully compatible with 3.3 V MCUs (STM32, ESP32, nRF52, etc.) without a level shifter.
Q: Is the E30-433T20D FCC and CE certified?
A: Yes. The module carries CE (RED), FCC Part 15, and RoHS certifications, supporting direct integration into end products for EU and US markets.
