E31-230T33D Ebyte AX5243 UART 8Km Low Frequency High Diffraction 230MHz 33dBm DIP 37*60 mm CE RoHs FCC LoRa Wireless Transmitter
[IC]：AX5243
[Frequency]：225~237.6MHz
[Power]：24~33dBm
[Distance]：8.0km
[Interface]：UART
[Weight]：23.6±0.1g
[Introduction]：E31-230T33D is a 2W wireless transceiver module operating at 225-237.6MHz (default 230MHz) with 3.3V and 5V supply voltages. It features FEC (Forward Error Correction) algorithm and data encryption & compression fucntion.
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| Pin No. | Pin Item | Pin Direction | Pin Application |
|---|---|---|---|
| 1 | M0 | Input（weak pull-up） | Work with M1 & decide the four operating modes. Floating is not allowed, can be ground. |
| 2 | M1 | Input（weak pull-up） | Work with M0 & decide the four operating modes. Floating is not allowed, can be ground. |
| 3 | RXD | Input | TTL UART inputs, connects to external TXD (MCU, PC) output pin.Can be configured as open-drain or pull-up input. |
| 4 | TXD | Output | TTL UART outputs, connects to external RXD (MCU, PC) input pin.Can be configured as open-drain or push-pull output. |
| 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-drainoutput or push-pull output (floating is allowed). |
| 6 | VCC | Input | Power supply 2.8V-5.5V DC |
| 7 | GND | Input | Ground |
| 8 | Fixing hole | Fixing hole | |
| 9 | Fixing hole | Fixing hole | |
| 10 | Fixing hole | Fixing hole | |
| 11 | Fixing hole | Fixing hole | |
| 12 | Fixing hole | Fixing hole | |
| 13 | Fixing hole | Fixing hole | |
| 14 | Fixing hole | Fixing hole | |
| 15 | Fixing hole | Fixing hole | |