[Operating frequency]：410.125~493.125MHz
[Transmitting power]： 22dBm
[Communication distance]：5.6km
[Product size]：31.0*18.0 mm
[Introduction]：E150-400T22S is a wireless serial port module (UART) based on LoRa radio frequency chip, which works in the frequency band of 410.125～493.125MHz (default 433.125MHz) and adopts LoRa spread spectrum technology. The wireless acquisition module integrates (switch input) DI, (switch output) DO, (digital-to-analog converter) ADC, (analog-to-digital converter) DAC, (pulse width modulation) PWM and (remote radio) LoRa functions. Users can send Modbus RTU commands through the serial port or remote LoRa networking equipment for control, and it also supports low power consumption mode. The wireless acquisition control module supports LoRa direct sequence spread spectrum technology function, has the advantages of longer communication distance, strong anti-interference ability, and strong confidentiality; industrial-grade passive crystal oscillator ensures its stability and consistency.
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| Pin number | Pin name | Pin direction | Pin usage |
| 1 | GND | Input | Module power ground |
| 2 | GND | Input | Module power ground |
| 3 | GND | Input | Module power ground |
| 4 | PWM1 | output | PWM output |
| 5 | PWM2 | output | PWM output |
| 6 | GND | Input | Module power ground |
| 7 | DAC1 | output | DAC output pin |
| 8 | DAC2 | output | DAC output pin |
| 9 | ADC1 | Input | ADC input pin, used for voltage measurement (0~5V) |
| 10 | ADC2 | Input | ADC input pin, used for voltage measurement (0~5V) |
| 11 | ADC4 | Input | ADC input pin, used for current measurement (0~20mA) |
| 12 | ADC5 | Input | ADC input pin, used for current measurement (0~20mA) |
| 13 | DI1 | Input (very weak pull-up) | Switch input, IO status can be queried through Modbus instructions |
| 14 | DI2 | Input (very weak pull-up) | Switch input, IO status can be queried through Modbus instructions |
| 15 | DI3 | Input (very weak pull-up) | Switch input, IO status can be queried through Modbus instructions |
| 16 | DI4 | Input (very weak pull-up) | Switch input, IO status can be queried through Modbus instructions |
| 17 | DO1 | Output (open drain) | Open-drain output, the E150-400T22S module has an external 1K pull-up resistor inside, so the user does not need to install an external pull-up resistor. |
| 18 | DO2 | Output (open drain) | Open-drain output, the E150-400T22S module has an external 1K pull-up resistor inside, so the user does not need to install an external pull-up resistor. |
| 19 | DO3 | Output (push-pull) | push-pull output |
| 20 | DO4 | Output (push-pull) | push-pull output |
| 21 | VCC | Input | Module power supply positive reference, voltage range: 3.3~5.5V DC |
| 22 | GND | Input | Module power ground |
| 23 | NC | Input | Reserve feet |
| 24 | NRST | Input | Reset module pin, it needs to be pulled low for at least 10 ms and then released to perform external reset. |
| 25 | NC | Input | Reserve feet |
| 26 | 485_EN | output | When connecting an external UART to RS485 chip, this pin serves as the control terminal. |
| 27 | TO | output | Used to indicate module working status, or used to wake up external MCU |
| 28 | RXD | Input | TTL serial port input, connected to external TXD output pin, pull-up input |
| 29 | TXD | output | TTL serial port output, connected to the external RXD input pin |
| 30 | GND | Input | Module power ground |
| 31 | ON | output/output | RF signal input/output terminal |
| 32 | GND | Input | Module power ground |