wifi parameters
| Wi-Fi version book | IEEE 802.11b/g/n |
| Frequency Range | 2.4GHz 2412MHz-2484MHz |
| Transmit power | 802.11b@18dBm 802.11g@15dBm 802.11n@14dBm |
| Antenna options | Onboard antenna |
Hardware parameters
| Module model | SM04A-V03 |
| Module size | 15.2*19.5*2.8mm |
| Bluetooth chip model | RDA5981A |
| Data interface | UART/GPIO/PWM |
| audio port | none |
| ripple voltage | 100mVp-p（max） |
| Operating Voltage | 3.3V DC |
| Working current | The maximum instantaneous current of the receiving module (high gain setting): 80mA typ The maximum instantaneous current of the transmitting mode (MCS7, duty ratio=100%): 220mA typ |
| Operating temperature | -40℃ – +85℃ |
| storage temperature | -40℃ – +85℃ |
| Safety certification | Compliant with FCC CE RoHS certification |
Software parameters
| role type | Server/Client |
| Operating mode | Client/Hotspot |
| Functional application | Support customer customization |
Power consumption parameters
| Active-Mode RX | 80mA max |
| Active-Mode TX @（MCS7,duty ratio=100%） | 220mA max |