Lease agreement - lawn maintenance and upgraded home electronics

[Brenda Lee]

We purchased a home that comes with a ring doorbell and nest thermostat. Is it possible to write on the lease agreement that if these items break it is the responsibility of the tenant to maintain since these are upgraded features? Or do we as the landlord have to fix or replace with the exact same items since it was there when they first started renting?  Can we also ask that lawn maintenance is the responsibility of the tenant instead of hiring someone to maintain the lawn?