Wireless features
| Bluetooth version | Bluetooth 4.0 BLE protocol |
| Frequency Rang | 2400-2483.5MHZ (2.4G ISM frequency band) |
| modulation mode | GFSK |
| Transmit power | -23dBm – 0dBm（Programming settings） |
| Receive sensitivity | -94dBm（Adopt CC 2540 high gain receiving sensitivity） |
| Antenna options | ceramic antenna |
| Transmission rate | 1K/S（No encryption） |
Hardware parameters
| Module model | SM01A |
| Module size | 18*13.7*1.9mm |
| Bluetooth chip model | TI CC2541 |
| Data interface | UART/PIO/PWM |
| audio port | none |
| ripple voltage | 100mVp-p（max） |
| Operating Voltage | 2.0V – 3.6V DC |
| Working current | The maximum instantaneous current of the receiving module (high gain setting): 20.2mA typ The maximum instantaneous current of the transmit mode (value when setting 0dBm O/P)：18.2mA typ |
| Operating temperature | -30℃ – +80℃ |
| storage temperature | -40℃ – +100℃ |
| Safety certification | Comply with BQB certification |
Software parameters
| role type | master/slave |
| Operating mode | Host mode/slave mode/advertising mode (Beacon)/direct drive |
| Functional application | Support customer customization |
Power consumption parameters
| Active-Mode RX | 20.2mA max |
| Active-Mode TX @ 0 dBm | 18.2mA max |
| sleep state | 0.45uA avg |
| data transmission | 8.36mA avg |