On the M450P, does this indicator light come with the lock?
No, it is in a kit sold separately (ATS/LED kit) and the lock must be a Plus "P" version to use this kit. This can be ordered separate and installed in the field....
System Components » Electromagnetic Locks | System Components » Electromagnetic Locks » M400 Series | System Components » Electromagnetic Locks » M400 Series » Schlage Electronics
How do you use an auto operator with M490DE?
Yes, you can, but you will need a secondary relay that will trigger the release input prior to triggering the auto operator to open.
When using the Schlage PS900 series power supplies, you...
System Components » Electromagnetic Locks
Does the GF3000SM use the same armature as the GF3000?
Yes, you will need the TRD armature.
The bolts for the armature assembly are shorter for the TRD and that is what is needed for the Gf3000SM
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System Components » Electromagnetic Locks | System Components » Electromagnetic Locks » GF3000 Series