[Carrier frequency]：410.125~493.125MHz
[Transmission power]：33dBm
[Communication distance]：16km
[Product weight]：7.2±0.1g
| Electrical parameters |
unit | E22-400T33E | Remark | |
| Voltage | v | 3.3~5.5 | ≥5.0V can guarantee the output power More than 5.5V burns the module permanently Note: When the communication interface is USB , the working voltage is 3.7 ~ 5.5. |
|
| communica tion level |
v | 3.3 | Use of 5V TTL is recommended plus level shifting |
|
| power consumption | emission current |
mA | 1000 | Instantaneous power consumption |
| receive current |
mA | 17 | ||
| Sleep current |
mA | 1.5 | software shutdown | |
| temperature | Operating temperature |
c | -40~+85 | industrial design |
| Storage temperature |
-40~+125 | |||
| Working humidity |
%RH | 10~90 | ||
| Note :When the communication mode is USB, the working voltage is 3.7~5.5. | ||||
| RF parameters | Value | Remark |
| Working frequency |
410.125~493.125MHz | Support ISM frequency band |
| Transmit power | 33dBm | - |
| Acceptance sensitivity |
-124 dBm | Air rate 2.4 kbps |
| FIFO | 240 Byte | Subpackage 32/64/128/240 bytes can be sent by command setting |
| Modulation | LoRa | A new generation of LoRa modulation technology |
| Measured distance |
16km | In a clear and open environment, the antenna gain is 5dBi , the antenna height is 2.5 meters, and the air rate is 2.4kbps |
| Hardware parameters | Parameter value | Remark |
| Communicatio n Interface |
UART/RS485/RS232/USB | single output |
| Crystal frequency |
32MHz | |
| Encapsulation | In-line |
|
| In-line - | Mini PCIE | |
| Dimensions | 30 * 51 mm | 士0.2mm |
| Antenna form | 1st generation IPEX |
Equivalent impedance about 50 Ω |
| Product Weight |
7.2g | 士0.5g |
Real Developer Implementation Case
1. Aerospace Telemetry and Upper-Air Meteorological Monitoring
Project Background: AERD Reusable Rocket and Akashbani V3 Upper-Air Meteorological Balloon, Bangladesh
Core Hardware: E22-400T33E (LoRa) and E840-TTL(EC05-DNE) (4G CAT1)
Technical Challenges:
The high-altitude sounding and rocket launch environment requires the wireless communication module to have extremely strong resistance to mechanical vibration, wide voltage adaptability, and ultra-long-distance signal penetration to prevent telemetry data loss under extreme weather conditions.
Solution Implementation and Performance:
Rocket Flight Telemetry (LoRa Link): The system uses the E22-400T33E module (equipped with an SX1268 chip, 433MHz band) integrated into the attitude control system of the reusable rocket. With its 33dBm transmit power and a communication range of up to 16km, it successfully established an interference-resistant wireless telemetry link in a high-vibration environment, enabling real-time transmission of core flight parameters.
Core Engineering Advantages:
Industrial-grade wide-temperature operation capability (-40~+85℃), standardized TTL serial communication, and plug-and-play architecture significantly lower the R&D threshold for the underlying hardware of aerospace engineering and significantly shorten the project iteration cycle.
Reference link:
1. https://www.facebook.com/photo?fbid=618342430947867&set=a.137723432343105
2. https://www.facebook.com/photo/?fbid=602518355863608
3. https://ebyteiot.com/blogs/ebyte-iot-blog/sponsorship-of-rocket-and-space-program-for-local-bangladeshi-students
