The E220-400T30S is a high-performance 1W (30dBm) LoRa wireless serial port module powered by the LLCC68 chip, supporting a 10km long-range transmission with a simplified UART interface for rapid industrial IoT deployment.
| Key Parameter | Specification |
|---|---|
| Model Number | E220-400T30S |
| Chip Solution | Semtech LLCC68 |
| Frequency Range | 410.125 ~ 493.125 MHz (Default 433.125MHz) |
| Transmit Power | 30 dBm (1 Watt) |
| Distance | 10 km |
| Communication Interface | UART (TTL Level) |
| Size & Weight | 25 * 40.5 mm | 6.95g |
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Certification
【CE Certification】E220-400T30S_CE
【ROHS Certification】E220-400T30S-ROHS
【FCC Certification】E220-FCC
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Product Descriptio
【PCB_LIB】E220-400T30S
Mannual
| Main | parameter | Performance | Remark |
|---|---|---|---|
| Operating frequency | 410.125~493.125MHz | Support ISM band | |
| Tx power | 30 dBm | - | |
| Receiving sensitivity | -129dbm | Air data rate: 2.4kbps | |
| Air data rate | 2.4k~62.5kbps | Controlled via user’s programming | |
| Distance for reference | 10Km | Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5m，air data rate: 2.4kbps |
| Main parameter | Description | Remark |
|---|---|---|
| Size | 25 * 40.5 mm | |
| Antenna | IPEX/Stamp hole | |
| Communication interface | UART | TTL level |
| Package | SMD |
| Main parameter | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|
| Operating voltage | 3.3 | 5.0 | 5.5 | V | ≥5.0 V ensures output power |
| Communication level | - | 3.3 | - | V | For 5V TTL, it may be at risk of burning down |
| TX current | - | 610 | - | mA | Instant power consumption |
| RX current | - | 17 | - | mA | |
| Sleep current | - | 3 | - | uA | Software is shut down@30dBm |
| Operating temperature | -40 | 20 | +85 | ℃ | Industrial design |
Application
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Remote Industrial Telemetry: The E220-400T30S leverages its 30dBm transmit power to overcome the signal attenuation caused by heavy metal structures in factory environments. By providing a transparent UART interface, it allows legacy PLC systems to communicate wirelessly over 10km without rewriting complex RF protocols.
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Smart Oilfield Monitoring: In oil extraction sites, wireless signals must penetrate diverse geographical obstacles. This module's LoRa spread spectrum technology ensures reliable data transmission for pressure and flow sensors, reducing the need for expensive wired infrastructure in hazardous areas.
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Environmental Data Logging: For remote meteorological stations, the LLCC68-based E220-400T30S provides a long-range backhaul link for weather data. Its high sensitivity allows for stable connectivity even under dense forest canopies or in deep valleys where line-of-sight is limited.
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Smart City Infrastructure: Integrated into intelligent street lighting or waste management systems, the 433MHz frequency offers excellent diffraction around buildings. This enables a single gateway to manage thousands of nodes across a wide urban radius.
FAQ
Q: What is the peak current requirement for the E220-400T30S when transmitting at the maximum 30dBm power level?
A: During 30dBm transmission, the module draws an instantaneous current of approximately 610mA to 650mA at 5V. It is vital to use a power supply capable of delivering at least 1A of burst current. To prevent voltage ripples from affecting the RF stability, we recommend placing a low-ESR electrolytic capacitor of 220uF to 470uF close to the VCC pin.
Q: How does the E220-400T30S ensure compatibility between 3.3V and 5V MCU systems via its UART interface?
A: The module features internal level-shifting circuitry that makes its TTL pins compatible with both 3.3V and 5V logic. However, the VCC supply should ideally be 5.0V to ensure the power amplifier reaches the full 30dBm output. When connecting to a 5V MCU, ensure the TXD and RXD pins are correctly configured to avoid excessive leakage current during sleep modes.
Q: Why is the LLCC68 chip considered an upgrade for serial port modules compared to older LoRa solutions?
A: The LLCC68 chip in the E220-400T30S offers an improved LoRa modulation scheme that provides higher spectral efficiency and better anti-interference capabilities. For UART modules, this translates to lower packet loss rates in congested industrial bands and a more robust WOR (Wake-on-Radio) performance, which is critical for low-power polling applications.
Q: What are the impedance considerations for the dual IPEX and Stamp Hole antenna options?
A: Both antenna interfaces are tuned to a standard 50-ohm characteristic impedance. If you utilize the stamp hole interface for SMT assembly, the PCB trace on the carrier board must be designed as a microstrip line with a calculated width relative to the substrate thickness to maintain 50 ohms. Any impedance mismatch will result in high reflected power (VSWR), which can cause the module to overheat and reduce its 10km effective range.
