I only see the Yale locks YRL210, 220, and 240 on Indigo's list of supported devices. The new Yale locks supporting the Z-Wave 500 chipset are YRD246 and YRD446.
I've been emailing with Yale, and this is what they told me:
The YRD120 T1L or YRD110 B1L... both come with an integrated Z-Wave radio. The rest of the locks use a Z-Wave plug-in module.
The locks all meet ANSI/BHMA Grade 2 requirements for residential locks.
The YRD246 and YRD446 can hold up 250 USERS and 500 history events when integrated with a controller the YRD120 on holds 100 users and 100 history events.
The YRD246 and YRD446 both have voice assisted programming, the YRD120 does not.
The YRD246 and YRD446 both use the new Z-Wave 500 Plus RF Module the YRD120 uses the Z-Wave 300 Series radio
Those are the major differences.
Regards,
Kevin Kraus
Director Product Management, Yale Residential
ASSA ABLOY USA
18425 Stone View Road
Monument, CO 80132