Vivint sets records for video doorbell, Nortek unveils first doorbell cam, August and Ring work with ADT Canopy, Honeywell teams with Skybell, DoorBird integrates with Control4 home automation ... and more smart-doorbell news for ISC West 2016.

The report lists ADT, AT&T, Comcast, Honeywell Total Connect and Verizon as key vendors.

Honeywell talks merger with United Technologies, then reportedly shops its Building Solutions unit. Tyco, Nortek and ADT, all giants in security and home automation, have also been active in M&A discussions and deals.

Hear from experts and stakeholders across the financial, M&A, integration and consultant fields on what Apollo's possible $7 billion acquisition of ADT will mean for the industry.

Investment group that bought Protection 1 and ASG Security last year is expected to close a multibillion-dollar deal for industry leader ADT.

Argus Insights study shows that consumers are frustrated with the user experience of many entry-level home automation apps. ADT, Philips, Comcast and AT&T systems in particular are dissed, while Vivint and Honeywell gain better marks.