US vs Canada Part Number - Remote Starter

Need your help again guys.
The P/N on Bernardi is listed as 08E91-E22-200B while my local dealer said the P/N for him shows up as 08E91-E22-400B.
Same thing for the wiring attachment kit, 08E92-STK-200B vs -400B.

Any idea what the difference is, or where I should go to find out?

Thanks.