Ebyte AX5243 UART 5Km Low Frequency High Diffraction 230MHz 27dBm DIP 24*43mm CE RoHs FCC LoRa Wireless Transmitter
[IC]：AX5243
[Frequency]：225~237.6MHz
[Power]：18~27dBm
[Distance]：5.0km
[Interface]：UART
[Weight]：8.2±0.1g
[Introduction]：E31-230T27D is a 27dBm wireless transceiver module. It operates at 225-237.6MHz, provides an easy way to use. The outstanding advantages of narrow-band transmission is more concentrated power density, longer transmission distance, better anti-interference performance.
| 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 | |