what would be the hardware required to read the data with a raspberry pi 4?

Hi, May I please know what I could do to check if the sensor is working? I have tried and bought a multitude of devices in efforts to make this sensor work but have had no luck what so ever. I initially tried using it with a Raspberry Pi 3 along with a 2CH RS485 Hat in order to get something from the sensor, but no luck. I then tried using a USB to Rs485 adaptor still nothing. Then I decided to try out this sensor according to the Rs485 Arduino shield and an Arduino mega2560 R3, Still nothing. I ordered 3 of these sensors and have had no luck with any one of them. I made sure the sensor was getting the right voltage at all times. I also tried inverting the A/B cables after reading somewhere that manufacturers are not consistent with the wiring. Please let me know who I can talk to regarding this. Thank you.

Hi, You can use the RS485 adapter module to connect to the Raspberry PI.https://www.dfrobot.com/product-102...

Use RS485 to TTL module, then read data through ESP32