Ebyte Ultra-High Cost-Effective Wireless Module 2000m Long Range Rf Transceiver Based On AMICCOM A7139 Chip
[IC]：A7139
[Frequency]：425~470MHz
[Power]：20dBm
[Distance]：2km
[Size]：20*14mm
[Feature]：Super cost-effective, low power consumption
[Product weight]：2.3±0.5g
[Introduction]：E41-400M20S is an ultra-high cost-effective wireless data transmission module launched by Ebyte. It is based onAMICCOM's A7139 radio frequency chip, and it has the characteristics of small size and low power consumption.
| No. | Pin | Direction | Description |
|---|---|---|---|
| 1 | GND | - | Ground |
| 2 | GND | - | Ground |
| 3 | GND | - | Ground |
| 4 | GND | - | Ground |
| 5 | GND | - | Ground |
| 6 | SCS | DI | SPI chip select pin |
| 7 | SCK | DI | SPI clock pin |
| 8 | SDIO | DI/O | SPI data pin |
| 9 | GND | - | Ground |
| 10 | GND | - | Ground |
| 11 | VCC | - | Power supply, connects to power supply +3.3V |
| 12 | GPIO1 | DI/O | Configurable multi-function IO port (seeA7139 manual for details) |
| 13 | GPIO2 | DI/O | Configurable multi-function IO port (seeA7139 manual for details) |
| 14 | GND | - | Ground |
| 15 | GND | - | Ground |
| 16 | GND | - | Ground |
| 17 | ANT | - | Antenna stamp hole interface, impedance is 50Ω |
| 18 | GND | - | Ground |