[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.
Official Store| Main parameters | performance | Remark | |
| minimum value | maximum value | ||
| Supply voltage | 0 V | 5.5 V | Exceeding 5.5V may permanently burn the module |
| blocking power | - | 10 dBm | Less likely to be burned if used at close range |
| working temperature | -40℃ | +85℃ | Industrial grade |
| ADC maximum input voltage | 0 V | 7.5 V | ADC1、ADC2、ADC3 |
| ADC maximum input circuit | 0 mA | 25 mA | ADC4、ADC5 |
| ADC minimum operating voltage | 2.5 V | - | Below this supply voltage, the ADC works abnormally |
| DAC minimum operating voltage | 3.3 V | - | Below this supply voltage, the DAC works abnormally |
| RF minimum operating voltage | 2.0 V | - | Below this supply voltage, the RF part stops working |
| Main parameters | performance | Remark | |||
| minimum value | Typical value | maximum value | |||
| Working voltage (V) | 3.3 | 5 | 5.5 | ≥3.3V ensures normal function | |
| Communication level (V) | 3.3 | Using 5V TTL risks burning out | |||
| Working temperature (℃) | -40 | - | 85 | Industrial grade design | |
| Working frequency band (MHz) | 410.125 | - | 493.125 | Support ISM frequency band | |
| Power consumption | Emission current (mA) | - | 120 | - | Instantaneous power consumption |
| Working current (mA) | - | 13 | - | ||
| Sleep current (μA) | - | 2 | - | Software shutdown | |
| Maximum transmit power (dBm) | twenty one | 21.5 | twenty two | User configurable | |
| Receiving sensitivity (dBm) | -145 | -147 | -148 | The air rate is 2.4kbps | |
| Over-the-air rate (bps) | 2.4k | 2.4k | 62.5k | User configurable | |
| ADC voltage range (V) | 0 | - | 5 | Exceeding this range may cause damage to the ADC | |
| ADC current range (mA) | 0 | - | 20 | Exceeding this range may cause damage to the ADC | |
| DAC pin drive capability (mA) | - | Weak, an external voltage follower may be required according to user needs. | |||
| DO1/DO2 driving capacity (mA) | - | 3.3 | 5 | Open-drain output, driving capability depends on the module’s internal and external pull-up resistor 1K | |
| DO3/DO4 driving capacity (mA) | -35 | 12 | push-pull output | ||
| DI input voltage (V) | 0 | 3.3 | Exceeding this voltage may cause DI damage | ||
| Main parameters | describe | Remark |
| reference distance | 5.6km | In a clear and open environment, the antenna gain is 5dBi, the antenna height is 2.5 meters, and the air rate is 2.4kbps. |
| ADC accuracy | 12 bits | Built-in external reference voltage and voltage follower, power supply voltage needs to be ≥3.0V, accuracy 1% |
| DAC accuracy | 8 bits | Floating point value, power supply voltage needs to be ≥3.3V, accuracy 1% |
| PWM accuracy | Frequency step: 1 Hz | Frequency range: 25Hz~65535Hz, accuracy 1% |
| Duty cycle step: 1% | Duty cycle range: 0~100%, accuracy 1% | |
| Subcontracting method | 240 btye | Maximum capacity of a single package, automatically subcontracted when exceeded |
| cache capacity | 1024 bty | - |
| Modulation method | LoRa | - |
| Communication interface | UART serial port | 3.3V TTL level |
| Packaging method | SMD type | - |
| Interface mode | UART | Users can connect an external RS485 adapter chip, and the control pin has been lead out |
| Overall dimensions | 31.0*18.0 | ±0.2mm |
| Antenna interface | IPEX/stamp hole | Characteristic impedance is about 50 ohms |