Can someone help ??
Only if you post your code and the schematic of the interface you have wired up.
It also helps if you have a data sheet, all those you posted do not give enough information about the data format expected.
There is no mention of what baud rate it is using or how to switch between RS485and Wiegand.
For example is the device sending tag information only or does it have to have something sent to it to enable certain modes.
Also have you shorted the green and grey wires together?
I notice it says:-
Reliability Thunder protected, water proof and striking resistant,
Thunder resistant is easy, few electronic devices are frighted of loud noises.