Airbnb's rules (since April 2024): no indoor cameras of any kind, on or off; outdoor cameras allowed only if their location and purpose are disclosed, and not where guests expect privacy; noise monitors that measure decibels only are allowed if disclosed (battery units, no cabling needed). John uses a Tapo DL110 at home. All the equipment (the locks, UniFi gateway, switch, access points, doorbells) is John's to supply and set up; Mastacon's part is the cable, the power, the door preparation and fitting off the devices John supplies.