Sources: Apple's push into smart home devices includes a doorbell, thermostat, and other accessories developed with LG; the products will carry the LG brand (Mark Gurman/Bloomberg)

Mark Gurman / Bloomberg: Sources: Apple's push into smart home devices includes a doorbell, thermostat, and other accessories developed with LG; the products will carry the LG brand — Apple Inc.'s upcoming push into smart home devices will include a doorbell, thermostat and other accessories…