- Problem: Difficulty opening garage door after walks with baby and wanting car Homelink buttons to lock/unlock front door without using phone.
- Solution: Use Zooz Zen16 multirelay for smart garage control and Liftmaster 850LM to receive Homelink signals for automations.
- Installation: Wire 850LM to Zen16 switches, connect reed sensor to detect door open/close, and wire garage door opener to Zen16 relay.
- Home Assistant configuration: Set Zen16 parameters to define door sensor, momentary switches, and relay behavior; exclude/re-include device for sensor entity.
- Security: Rolling codes mitigate some risks; presence check or wiring remote through Zen16 can prevent unauthorized garage access.
- Outcome: Smooth stroller return and easy door unlocking via car buttons.