| Operating parameter |
Performance |
Remark |
| Operating frequency | 410.125~493.125MHz | Support ISM band |
| Tx power | 30 dBm | - |
| Receiving sensitivity | -148dbm | Air data rate is 2.4kbps |
| Air data rate | 0.3k~62.5kbps | Controlled via user’s programming |
| Distance for reference | 10000m | Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5m，air data rate: 2.4kbps |
| Size | 40.5*25 mm | - |
| Antenna | IPEX/stamp hole | 50 ohm impedance |
| Communication interface | UART | - |
| Package | SMD | - |
No.
| Name
| Direction
| Function
|
| 1 | GND
| -
| Module ground |
| 2 | VCC | -
| Module power supply positive reference，Power supply：3.3～5.5V DC |
| 3 | AUX | Output |
The user wakes up the external MCU and outputs low level during power on self-test initialization; (can be suspended) |
| 4 | TXD | Output
|
TTL UART outputs, connects to external (MCU, PC) RXD input pin.
|
| 5 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) RXD output pin. |
| 6 | M1 | Input（weak pull-up） |
Work with M0 to decide 4 working modes of module (not suspended, if not used, could be grounded).）
|
| 7 | M0 | Input（weak pull-up） | Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded).
|
| 11 | ANT | Output |
Antenna(high frequency signal output，50 ohm）
|
| 12 | GND | -
| Ground |
| 13 | GND | -
| Ground
|
| 14 | GND | -
| Ground
|
| 18 | NC | - | Empty |
| 19 | NC | -
| Empty
|
| 20 | NC | - | Empty
|
| 21 | NC | - | Empty |
| 22 | RESET | Input | Reset pin when program is loaded (suspended, user does not need to connect)
|
| 23 | GND | Input | Ground pin when program is loaded (suspended, user does not need to connect)
|
| 24 | NC | - | Empty |
