990LR registering wrong Card Number/ Invalid Card

If you are getting an invalid card error or wrong card number is being registered, through your 990LR. It is possible that you are using 34 bit proximity cards and to make it work properly, please wire the 990LR correctly by following the chart below:

connect the yellow wire to ground of 990LR to accept 34 bit proximity cards.

Updated on: 10/12/2018