RFID ID-20 with read range of less than 20mm! What am I doing wrong?

Hi,
I have purchased an ID-20 RFID module from Rfid Readers Australia | Little Bird Australia. I also purchased a set of 5 RFID tags (Rfid Tags Australia | Little Bird Australia).

I am only getting a read range of about 1-15mm. What could be doing this? Could it be the tags? Or have I screwed up something with the RFID module?

Thanks
John

Does it really get 5Volts needed? Some devices perform substantial better with a separate power supply.

Ill test this when get back home and let you know!

Thanks for the help
John

Don't mount the reader on metal or have metal anywhere close. Also check the supply ripple that cuts down the range if it is too much.

I have found that it was infact that it was not receiving the required 5v.

Thanks!