These LED Modules came from a working LED Watchfire sign - Model Number: x19j-F8
Assembly # 53866
Revision 2.1
LED Batch: 44AZ

Input: 5V

Compatible Sign Models:
oa19h.1
x19h
x19j

Keep your Watchfire running. These parts will no longer be available from Watchfire soon.
30 Day Warranty

I cannot verify that these fit other sign models but will gladly accept returns if you buy it and it doesn't fit your sign. You just pay shipping for the return