Recommendation for 4-Gang Smart Light Switch? : r/smarthome
3-way Switch Variations
RunLessWire - The Original Self-Powered (NO Batteries) Wireless Light Switch & Receiver Kit No WiFi Needed DIY, Remote 150+ft RF Range - 4 Way: 1 Receiver, 3 Switches - White - Amazon.com
electrical - Replacing a 4-way switch with just an outlet - Home Improvement Stack Exchange
4-Way Smart WiFi Switch Wall Light Control Touch Screen Switch WiFi Remote Control Switch Voice Control Switch Single Circle for Alexa Google Home SIRI(US Black): Amazon.com: Tools & Home Improvement
ELEGRP 4 Way Decorative Light Switch, 15Amp, 120/277 Volt, AC Decorator Rocker Paddle Wall Switch Replacement, Self-Grounding, Residential and Commercial Grade, UL Listed (10 Pack, Glossy Black): Amazon.com: Tools & Home Improvement
TREATLIFE Smart Light Switch Single Pole Smart Switch Works with Alexa, Google Home and SmartThings, 2.4GHz Wi-Fi Timer Light Switch, Neutral Wire Required, No Hub Required, ETL Listed, FCC, 4 Pack -
MOES WiFi Module|Smart Light Switch 3 4 Gang 1 2 Way Relay|104 Modular