Install A Smart Switch With No Neutral - How To Guide — OneHourSmartHome.com
Smart Switch Wiring - Electrical 101
Tuya WiFi Touch Smart Light Switch NO Neutral Wire Required - UK 1 / 2 / 3 Gang | eBay
Kasa Smart 3 Way Switch HS210 KIT, Needs Neutral Wire, 2.4GHz Wi-Fi Light Switch works with Alexa and Google Home, UL Certified, No Hub Required, White,2 Count (Pack of 1) : Amazon.co.uk:
How To Install A Smart Light Switch – Bseedswitch
DIY smart home: What's a neutral wire and what to do if you don't have one | Tom's Guide
Meross Smart Two Way Light Switch, MSS550XHK (EU/UK Version) – Meross Official Store