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K62-DL20 Ebyte OEM/ODM cheap 4000m RS485/LoRa Wireless Spread Spectrum Point-to-point 4-20mA analog transmission module
[Introduction]：Features: This product is a product with two functions. Function: The sender collects 4-channel analog signals (0/4～20mA) and transmits the data to the receiver through wireless (LoRa spread spectrum), and the receiver restores the 4-channel analog signal (0/4～20mA).
| serial number | Port and Other Definitions | Function | illustrate |
|---|---|---|---|
| 1 | PE | protective earth terminal | Lightning protection grounding. If the ground lead is good, it is recommended to connect the product case to the ground;That's it. |
| 2 | + | power positive | The power input is positive, and the DC input voltage range is 8-28V. |
| 3 | - | Power Ground | Power input negative (0V). |
| 4 | B/RX | communication interface B/RXD | 485 interface B/(RS232_RXD). |
| 5 | A/TX | communication interface A/TXD | 485 interface A/(RS232_TXD). |
| 6 | G | communication port | 485 ground (can not be connected)/RS232 signal ground (0V). |
| 7 | Second communication port | Antenna port/network port | 433Mhz antenna port/network port socket |
| 8 | AI1 | analog input 1 channel | 0/4～20mA analog signal input channel 1. |
| 9 | GND | Input negative pole | Input negative (0V). |
| 10 | AI2 | Analog input 2 channels | 0/4～20mA analog signal input channel 2. |
| 11 | GND | input negative | Input negative (0V). |
| 12 | AI3 | Analog input 3 channels | 0/4～20mA analog signal input channel 3. |
| 13 | GND | input negative | Input negative (0V). |
| 14 | AI4 | Analog input 4 channels | 0/4～20mA analog signal input channel 4. |
| 15 | GND | input negative | Input negative (0V). |
| 16 | - | None | Leave it in the air, do not connect. |
| 17 | SFR | reset | Press and hold for 3 seconds to restore the factory settings (Set Factory Reset) (according to the status of the RUN lightinstruct). |
| 18 | SIM | SIM card slot | Insert a data IoT card or a phone card with a sufficient data plan. |