EWM293-470T20S 5km Communication China-made TurMass Technology New-Generation LPWAN Long-Distance Transmission Module Multiple Operation Modes via AT Commands
[Communication Interface]： UART
[Operating Frequency]：470-510MHz
[Transmit Power]： 20dBm
[Modulation]：DPFSK
[Communication Distance]：5km
[Size]：16*26mm
[Introduction]：The EWM293-470T20S is a brand-new, China-made, long-range Sub-1G wireless data transmission module launched by Chengdu Ebyte. It features high speed, long transmission distance, and low cost. Operating in the 470MHz-510MHz frequency band, this LPWAN transmission module provides universal UART-based AT commands and flexible parameter configuration capabilities, allowing users to quickly transmit and receive data wirelessly based on application requirements.
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| Pin number | Pin Name | Pin direction | Pin Purpose |
| 1 | GND | - | Module ground wire |
| 2 | GND | - | Module ground wire |
| 3 | GND | - | Module ground wire |
| 4 | GND | - | Module ground wire |
| 5 | GPIO6 | Input and Output | Ordinary GPIO, the default configuration is UART_RTS |
| 6 | GPIO7 | input | The default configuration is the update pin. This pin needs to be pulled high when burning the firmware; it is configured as UART_CTS when hardware flow control is used. |
| 7 | RXD | input | TTL serial port input, connected to external TXD output pin |
| 8 | TXD | Output | TTL serial port output, connected to external RXD input pin |
| 9 | NC | -- | Empty foot (not open for use, users do not need to care) |
| 10 | VCC | - | Module power supply positive reference, voltage range: 1.8~5.5V DC |
| 11 | GND | - | Module ground wire |
| 12 | NRST | input | Reset signal input, high effective |
| 13 | GND | - | Module ground wire |
| 14 | GPIO3 | Input and Output | Normal GPIO |
| 15 | 3.3V | - | 3.3V (internal power supply 3.3V, power supply prohibited) |
| 16 | GPIO0 | Input and Output | Normal GPIO |
| 17 | GPIO2 | Output | The default configuration is the RF switch enable pin (RX_EN) |
| 18 | GPIO1 | Output | The default configuration is the RF switch enable pin (TX_EN) |
| 19 | GND | - | Module ground wire |
| 20 | GND | - | Module ground wire |
| 21 | ON | - | antenna |
| 22 | GND | - | Module ground wire |