E32-T Serisi , LoRa RF Modül E32-900T20D
E32-900T20D is a wireless serial port module (UART) based on SEMTECH’s SX1276 RF chip. It has multiple transmission modes, working in the 862MHz~931MHz, LoRa spread spectrum technology, TTL output.
SX1276 features LoRa™,which will bring longer communication distance, and has the advantages of concentrated power density meanwhile it has a very strong confidentiality. the modules of 20dBm
transmitting power adopt industrial grade crystal oscillators to ensure the stability and consistency. E32-900T20D are widely applied in utility meters, IoT renovation, smart home, etc. The modules feature data encryption and compression. The data transmitted in air features randomness.air Data Rate(Default 2.4kps).
E32-900T20D strictly follows design standards of FCC, CE, CCC and meets various RF certification requirements for exporting.
| Model | Interface | IC | Frequency Hz | Power dBm | Distance km | Air data rate | Package | Size (mm) | Feature | Manual |
| E32-400T20S3 | UART | SX1278 | 433M 470M | 20 | 3,0 | 0.3k~19.2k | SMD | 16 * 26 | LoRa spread spectrum | ✔ |
| E32-433T20DC | UART | SX1278 | 433M | 20 | 3.0 | 0.3k~19.2k | DIP | 21*36 | LoRa spread spectrum | ✔ |
| E32-433T20DT | UART | SX1278 | 433M | 20 | 3.0 | 0.3k~19.2k | DIP | 21*36 | LoRa spread spectrum | ✔ |
| E32-433T20S | UART | SX1278 | 433M | 20 | 5,0 | 2.4k～19.2k | SMD | 16 * 26 | LoRa Spread Spactrum Technology | ✔ |
| E32-433T20S1 | UART | SX1278 | 433M | 20 | 3.0 | 0.3k~19.2k | SMD | 17*25.5 | LoRa spread spectrum | ✔ |
| E32-433T20S2T | UART | SX1278 | 433M | 20 | 3.0 | 0.3k~19.2k | SMD | 17*30 | LoRa spread spectrum | ✔ |
| E32-433T27D | UART | SX1278 | 433M | 27 | 5.0 | 0.3k~19.2k | DIP | 24*43 | LoRa spread spectrum | ✔ |
| E32-433T30D | UART | SX1278 | 433M | 30 | 8.0 | 0.3k~19.2k | DIP | 24*43 | LoRa spread spectrum | ✔ |
| E32-433T30S | UART | SX1278 | 433M | 30 | 8.0 | 0.3k~19.2k | SMD | 25*40.5 | LoRa spread spectrum | ✔ |
| E32-868T20D | UART | SX1276 | 868M | 20 | 3.0 | 0.3k~19.2k | DIP | 21*36 | LoRa spread spectrum | ✔ |
| E32-868T20S | UART | SX1276 | 868M | 20 | 3,0 | 0.3k~19.2k | SMD | 16 * 26 | LoRa spread spectrum | ✔ |
| E32-868T30D | UART | SX1276 | 868M | 30 | 8.0 | 0.3k~19.2k | DIP | 24*43 | LoRa spread spectrum | ✔ |
| E32-868T30S | UART | SX1276 | 868M | 30 | 8.0 | 0.3k~19.2k | DIP | 25*40.3 | LoRa spread spectrum Continuous transmiss | ✔ |
| E32-900T20S | UART | SX1276 | 868M 915M | 20 | 5,5 | 0.3k~19.2k | SMD | 16*26 | LoRa spread spectrum | ✔ |
| E32-900T30D | UART | SX1276 | 868M 915M | 30 | 8,0 | 0.3k~19.2k | DIP | 24*43 | LoRa spread spectrum | ✔ |
|
General parameters |
||
|
Antenna type |
SMA-K |
50Ω characteristic impedance |
|
Operating temperature |
-40 ~ +85℃ |
- |
|
Operating humidity |
10% ~ 90% |
Relative humidity,No condensation |
|
Storage temperature |
-40 ~ +125℃ |
- |
|
Size |
21*36mm |
- |
|
Weight |
6.7g |
Average weight |
|
Connector |
1*7*2.54mm |
Plug-in |
|
Operation Range |
About 3000m |
Test condition: clear and open area& 20dBm, antenna gain:5dBi, height: 2m, air data rate: 2.4kbps |
|
Communication interface |
UART |
8N1, 8E1, 8O1,Eight kinds of UART baud rate, from 1200 to 115200 bps |
|
Driving mode |
UART |
Can be configured to push-pull/high pull, open-drain |
|
Transmitting length |
512 bytes buffer |
58 bytes per package |
|
Receiving length |
512 bytes buffer |
58 bytes per package |
|
Electrical parameters |
||
| Frequency Band | 900 - 931MHz |
Default: 915MHz, channel:32 |
| Supply voltage | 2.1 - 5.5V DC |
5V (recommended) |
|
Communication voltage |
Maximum 5.2V |
- |
| Transmitting power | 20dBm |
Can be configured to 20, 17, 14, 10dBm |
| Air data rate | 2.4kbps |
6 optional level(0.3, 1.2, 2.4, 4.8, 9.6, 19.2kbps) |
| Standby current | 3.0uA |
M1=1, M0=1 ( Mode 3 ) |
| Transmitting current | 120mA@20dBm |
≥300mA |
|
Receiving current |
14mA |
Mode 0,Mode 1 |
|
Sensitivity
|
-138dBm/0.3kbps |
Sensitivity has nothing to do with baud rate or timing |
|
inA No. |
Pin item |
Pin direction |
Pin application |
|
1 |
M0 |
Input |
Work with M1 & decide the four operating modes. |
|
2 |
M1 |
Input |
Work with M0 & decide the four operating modes. |
|
3 |
RXD |
Input |
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be configured as open-drain or pull-up input, see more in parameter setting. |
|
4 |
TXD |
Output |
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be configured as open-drain or push-pull output,see more in parameter setting. |
|
5 |
AUX |
Output |
To indicate module’s working status & wakes up the external MCU. During the procedure of self-check initialization, the pin outputs low level. Can be configured as open-drain output or push-pull output (floating is allowed). |
