The Ebyte E32-900T20S is a wireless serial port module (TTL level) based on Semtech's LoRa solution, with transparent transmission mode, working in the 862~930MHz frequency band, and using LoRa spread spectrum technology. At present, it has been stably mass-produced and has been widely used in the three-meter industry, Internet of Things transformation, smart home and other fields.
| Parameter Item | E32-900T20S-V8 Specs |
|---|---|
| Model Version | E32-900T20S-V8 |
| Core RF Chip | Semtech SX1276 LoRa Chip |
| Working Frequency Band | 862MHz ~ 930MHz |
| Max Transmit Power | 20 dBm (100mW) |
| Reference Communication Distance | 5500 Meters (line-of-sight) |
| Communication Interface | 3.3V TTL UART |
| Supply Voltage Range | 2.3V ~ 5.5V |
| Typical Current | TX:120mA / RX:16mA / Sleep:4uA |
| Receiving Sensitivity | -123 dBm @ 2.4kbps |
| Max Single Packet Length | 58 Bytes |
| Buffer Capacity | 512 Bytes |
| Working Modes | Transparent / WOR Wake-up / Power Save / Deep Sleep |
| Transmission Modes | Point-to-point / Broadcast / Fixed-point / Monitor |
| Antenna Interface | IPEX Socket / Stamp Hole Pad |
| Package Type | SMD Stamp Hole, 1.27mm Pin Pitch |
| Module Dimension | 26mm * 16mm |
| Net Weight | 2.2g |
| Operating Temperature | -40 Celsius ~ +85 Celsius |
| Certifications | FCC, CE, RoHS |
| Main parameters | Parameter value | Remark |
| reference distance | 5.5kM | Sunny and open space, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4kbps |
| Subcontracting method | 58Btye | Maximum capacity of a single package, automatically subcontracted when exceeded |
| cache capacity | 512Btye | - |
| Modulation | LoRa™ | - |
| Communication Interface | UART serial port | TTL level |
| Packaging method | patch | - |
| Interface mode | stamp hole | Pitch 1.27mm |
| Dimensions | 26*16mm | - |
| Antenna interface | IPEX/stamp hole | Characteristic impedance is about 50Ω |
| Main parameters | Minimum value | Typical value | maximum value | unit | condition |
| Operating Voltage | 2.3 | 5 | 5.5 | V | >5.5V guaranteed output power |
| Communication level | - | 3.3 | - | V | - |
| Operating temperature | -40 | - | 85 | ℃ | Industrial grade design |
| Working frequency | 862 | - | 931 | MHz | - |
| Emission current | - | 120 | - | mA | - |
| receive current | - | 16 | - | mA | - |
| Sleep current | - | 4 | - | μA | - |
| Maximum transmit power | - | 20 | - | dBm | - |
| Receive sensitivity | - | -123 | - | dBm | 2.4kbps over the air |
Practical Application Scenarios
1. European Smart Water/Gas Meter Reading System with E870 LoRaWAN Gateway
Embed E32-900T20S-V8 inside residential smart meters, adopt WOR air wake-up mode to cut meter battery power consumption. The 5.5km long-distance LoRa signal penetrates multi-story building walls, upload pulse meter data to E870-S industrial gateway. Ultra-low 4uA deep sleep current extends lithium battery service life of passive meters over 5 years, FCC & CE certification meets EU utility meter export standards.2. North American Large Farm Environmental Monitoring Matching EID041 Sensors
Pair this LoRa module with EID041 temperature humidity transmitters for distributed agricultural monitoring nodes. LoRa spread spectrum anti-interference capability eliminates signal loss from crop barriers and farm machinery electromagnetic noise. Wide 2.3-5.5V voltage supports solar small power supply for remote field sensor equipment, compact 26*16mm SMD size fits tiny sensor PCB layout.3. Australia Outdoor Livestock Tracking Collar Terminal
Integrate E32-900T20S-V8 into animal ear tag collars, deep sleep mode reduces daily power drain. Long 915MHz transmission covers vast grazing land without cellular network coverage, stamp hole onboard antenna design removes extra antenna assembly cost for mass livestock IoT hardware OEM production.4. Southeast Asian Factory Equipment Vibration Alarm Nodes
Connect E32-900T20S to vibration sensors and STM8 low-power MCUs, wirelessly send equipment fault alarm signals to factory central PLC. Multi transmission modes support point-to-point and group broadcast alarm push, industrial -40~85 Celsius temperature works stably in high-temperature metal workshop environments.5. Global Battery-Powered Portable Industrial Data Loggers
Use the module as wireless data link for portable temperature/humidity loggers, transparent transmission mode simplifies upper computer data reading. Multiple antenna options (FPC / whip antenna) adapt handheld device structural design, built-in watchdog circuit prevents wireless communication crash caused by complex field electromagnetic interference.





