For the price this is great and could scale well. The controller software is very basic but there is api on github that works well.

Great price, but the instruction and software that comes with it doesn't help much. Software is written to run on windows which I had to reverse engineer the network communication and write my own program that runs on raspberry pi and totally disregard the internal user database. There is a lot of little things that you have to read from the comment and FAQ to get answers from. I wish they could just put those things in a document that will help with configuration and setup of this unit. Another thumbs up for them is the response.

There was no way to make it discovereable by the computer, tried conecting it directly (RJ45) to a PC, thru the local network, thru the wlan, but no luck with any of those, there a no guides on internet, the provided software has more than a decade, I waste my time, a technician which I hired time and a lot of money. I have already wrote the seller for help, hope I be able to come back soon with good news updating the review, but for now I do not reccommended even if you are a technician with knowledge about wires and networks.

***UPDATE***
I contacted seller, they made all they can to help me, it has been one of the better experience in customer service I have ever had, now almost everything is working like a charm, but now I am sure they will help me have the best experience with their product, I highly reccomend them, would be useful if they ship the board with a few more instructions

Have 8 of these working in different cities inside the same corporation, working flawlessly even with card readers from other manufacturers and RFID for cars. The software is a little old but if you only need access control and attendance is perfect for you. If you are buying a new controller and is not detected by the software, you need to update the software first.

This item is surprisingly versatile with the amount of options and features. First reader I hooked up was a standard proximity RFID reader, it worked with no problems. I then hooked up a keypad/proximity combo and with some trial and error was able to get it to work correctly as well ( make sure to go to the console and upload to the specific door. ) The web gui is simple but effective and the same goes for the mobile app ( IOS )

The only draw back to the mobile app and the web gui is the lack of security, I would make too not give this information to everyone. The fact that is stores the events on board and the software doesn't have to be running is awesome, I tested it while it was off the network and it still stores the data with no issues, you simply need retrieve it with the software or the web gui. For the price it is simply worth it, I do suggest having some knowledge of how door access systems work when purchasing this item ( understanding relays, contacts, and the different types of prox technology )

Good work