E32-T Serisi , LoRa RF Modül E32-900T20S
E32-900T20S
[IC]：SX1276
[Frequency]：862～930MHz
[Power]：20dBm
[Distance]：5.5km
[Size]：16*26mm
[Introduction]：E32-900T20S 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.
| 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 | ✔ |
| Main parameter | Description |
Remark |
| Distance for reference |
5500m |
Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5m，air data rate: 2.4kbps |
| TX length |
58Btye |
Maximum capacity of single package, automatic sub-packing after exceeding. |
| Buffer |
512Btye |
- |
| Modulation |
LoRa™ |
- |
| Communication interface |
UART |
@3.3V,TTL |
| Package |
SMD |
- |
| Connector |
Stamp hole |
1.27mm spacing |
| Size |
16 * 26 mm |
- |
| Antenna |
IPEX/stamp hole |
50 ohm impedance |
| Main parameter | Min | Typ. | Max. | nit | Remark |
| Operating voltage |
2.3 |
5 | 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 |
| Operating temperature |
-40 |
- | +85 |
℃ |
Industrial design |
| Operating frequency（ |
862 |
868 | 931 |
MHz |
Support ISM band |
| Transmitting current |
- | 120 | - | mA |
Instant power consumption |
| Receiving current |
- | 16 | - | mA |
- |
| Turn-off current |
- | 4 | - | μA |
Software is shut down |
| Max Tx power |
- | 20 |
- | dBm |
- |
| Receiving sensitivity |
- |
-123 |
- |
dBm |
Air data rate is 2.4kbps |
| Pin No. |
Pin Item | Pin Direction | Pin Application |
| 1 | NC | - |
Empty Pin |
| 2 | GND | - |
Ground |
| 3 | NC | - |
Empty Pin |
| 4 | NC | - |
Empty Pin |
| 5 | NC |
- |
Empty Pin |
| 6 | NC |
- |
Empty Pin |
| 7 | NC | - |
Empty Pin |
| 8 | GND | - |
Ground |
| 11 | GND | - |
Ground |
| 12 | ANT | - |
Antenna |
| 13 | GND | - |
Ground |
| 14 | GND | - |
Ground |
| 15 | GND | - |
Ground |
| 16 | GND | - |
Ground |
| 19 | GND | - |
Ground |
| 20 | M0 |
Input （weak pull-up） |
Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 21 | M1 |
Input （weak pull-up） |
Work with M0 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 22 | RXD | Input |
TTL UART inputs, connects to external (MCU, PC) TXD output pin. |
| 23 | TXD | Output |
TTL UART outputs, connects to external RXD (MCU, PC) input pin. |
| 24 | AUX | Output |
Used to indicate the working status of the module; The user wakes up the external MCU and outputs low level during power-on self-check initialization; (can be left floating)
|
| 25 | VCC | - |
Power supply: 2.3~ 5.5V DC |
| 26 | GND | - |
Ground |
