The Ebyte E32-900M20S is a high-performance, industrial-grade SMD LoRa wireless transceiver module based on the Semtech SX1276 chip, operating in the 868/915MHz frequency band with a maximum transmission power of 100mW (20dBm) and featuring an ultra-compact 14x20mm footprint with dual antenna support (IPEX and Stamp Hole) for versatile IoT deployment.
Brand Name:EBYTE
Origin:Mainland China
Condition:New
Type:SX1276 Lora Wireless Module
Type:
Model Number:E32-900M20S
Application:SX1276 Lora Wireless Module
Application:
Package:SMD
Power supply voltage:Max:5.5V
Blocking power:Max:10dBm
Communication level:Typ3.3
Antenna:IPEX/Stamp Hole
Size:14*20 mm
| Main parameter | Description |
Remark |
| Reference distance |
5Km |
Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2m，air data rate: 2.4 kbps |
| FIFO |
256Byte |
Maximum length of single send |
| Crystal Oscillator |
32MHz |
Passive crystals |
| Protocol |
LoRa |
FSK/GFSK/MSK/GMSK/OOK |
| Package |
SMD |
Spacing of 2.54 mm |
| Interface |
1.27mm |
Sample hole |
| Communication interface |
SPI |
0～10Mbps |
| Size |
14*20mm |
- |
| Antenna |
Sample hole / IPEX |
50 ohm impedance |
| Main parameter | Min | Type | Max | Unit | Remark |
| Operating voltage |
3.3 |
5 | 5.5 | V | ≥5.5 V ensures output power |
| Communication level |
- | 3.3 |
- |
V |
- |
| Operating temperature |
-40 |
- | +85 |
℃ |
Industrial grade |
| Operating frequency |
850 |
868/915 |
931 |
MHz |
- |
| TX current |
- | 650 | - | mA |
- |
| RX current |
- | 19 |
- | mA |
- |
| Sleep current |
- | 2 | - | μA |
- |
| Max TX power |
- | 20 | - | dBm |
- |
| Receiving sensitivity |
-123 |
-124 |
-125 |
dBm |
Air data rate is 1.2 kbps |
Practical Application Scenarios
1. Long-Range Agricultural Environmental Monitoring
This module is frequently used in precision agriculture to transmit soil moisture, pH levels, and ambient temperature data from widely dispersed fields to a central gateway. Its high sensitivity and LoRa modulation allow for reliable data transmission over several kilometers, even in areas with dense vegetation or uneven terrain, outperforming traditional 2.4GHz solutions.
2. Smart Grid and Utility Metering
In automated meter reading (AMR) systems, the E32-900M20S acts as a low-power communication node embedded within water, gas, or electricity meters. By utilizing the sub-GHz band, it achieves superior building penetration, ensuring that data packets reach the concentrator even when meters are located in basements or utility closets.
3. Industrial Remote Control and Telemetry
OEM manufacturers integrate this module into industrial handheld remotes for cranes and heavy machinery. The compact SMD design allows for easy integration into space-constrained PCBs, while the dual antenna interface (IPEX) provides flexibility for mounting the antenna externally on metal enclosures to maintain link stability in industrial environments.
FAQ Section
1. What are the benefits of the dual antenna interface design?
The inclusion of both an IPEX connector and a stamp hole interface offers maximum manufacturing flexibility. You can use the IPEX connector with a pigtail for external antennas in enclosures that shield RF signals, or use the stamp hole to solder an antenna directly to the PCB for cost-effective, high-volume production.
2. Is the E32-900M20S compatible with the SX1276 standard register set?
Yes, because the module is based on the Semtech SX1276 silicon, it is fully compatible with standard LoRa driver libraries, including those for Arduino, STM32, and Raspberry Pi. This ensures a short development cycle for embedded engineers familiar with the SX1276 architecture.
3. What is the recommended power supply design for optimal performance?
To ensure stable 20dBm output, the power supply must be capable of providing sufficient transient current during transmission without significant voltage drops. We recommend using a high-quality LDO or switching regulator that minimizes ripple, coupled with a decoupling capacitor placed close to the module’s VCC pin.
