| RF Parameter | Value | Remark |
| Working frequency | 410~441 MHz | Default: 433MHz |
| Transmitting power | 21~30 dBm | Default: 30dBm（About 1W） |
| Receiving sensitivity | -147 dBm | Air data rate: 0.3kbps |
| Air data rate | 0.3k~19.2kbps | Default: 2.4kbps |
| Test distance | 8000 meter | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 2.4kbps |
| Hardware Parameter | Value | Remark |
| Size | 24 * 43 mm | Without SMA |
| Antenna type | SMA-K |
|
| Communication interface | UART | Baud rate: 1200~115200, default: 9600 |
| Package | DIP |
|
| Buffer | 512 bytes buffer | Automatically sub-packaging with 58 bytes per package |
| 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 ofburning down |
| Transmitting current | - | 106 | Instant powerconsumption | mA | Instant power consumption |
| Receiving current | - | 15 | - | mA | - |
| Turn-off current | - | 4 | - | μA | Software is shut down |
| Operating temperature | -40 | - | +85 | ℃ | |
| Max Tx power | 19.0 | - | 20.0 | dBm | - |
| Air data rate | 0.3k | 2.4k | 19.2k | bps | Controlled via user’s programming |
| 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-drain output or push-pull output. (Floating is allowed) |
| 6 | VCC | Input | Power supply 3.3V~5.2V 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 |
