E32-T Serisi , LoRa RF Modül E32-868T20S
E32-868T20S
[IC] : SX1276
[Frequency] : 862~893MHz
[Power] : 10~20dBm
[Distance] : 3km
[Interface] : UART
[Weight] : 2.1±0.1g
[Introduction] : E32-868T20S is a wireless serial port module (UART) based on SEMTECH's SX1276 RF chip. It has multiple
transmission modes, working in the 862MHz~893MHz, (default 868MHz), LoRa spread spectrum technology, TTL output， compatible with 3.3v~5v IO.
| 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 | ✔ |
| RF Parameter | Value |
Remark |
| Working frequency |
862~893 MHz |
Support ISM band |
| Transmitting power | 20 dBm |
Default: 20dBm（About 100mW） |
| Receiving sensitivity | -146 dBm |
Air data rate is 0.3kbps |
| Air data rate | 0.3k~19.2kbps |
Controlled via user’s programming |
| Test distance | 3000 meter |
Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5 |
| Hardware Parameter | Value |
Remark |
| Size |
16 * 26 mm |
- |
| Antenna type | IPX / Stamp hole |
50 ohm impedance |
| Communication interface | TTL |
@3.3V |
| Package | SMD |
- |
| Buffer | 512 byte |
- |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply |
3.3 | 5.0 | 5.2 | V | ≥5.0 V ensures output power |
| Communication level | - | 3.3 | - | V |
For 5V TTL, it may be at risk of burning down |
| Transmitting current |
- |
118 | - | mA | Instant power consumption |
| Receiving current | - |
14 | - | mA |
- |
| Sleep current | - | 4 | - | μA | Software is shut down |
| Operating temperature |
-40 | - | +85 | ℃ | Industrial design |
| Operating humidity |
10 | 60 |
90 | % | - |
| Storage temperature |
-40 | 20 |
+125 | ℃ | - |
| 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 |
