User Guide for SONOFF models including: S40 WiFi Smart Plug with Energy Monitoring, S40, WiFi Smart Plug with Energy Monitoring, Smart Plug with Energy Monitoring, Plug with Energy Monitoring, Energy Monitoring
SONOFF S40 WiFi Smart Plug with Energy Monitoring, 15A Smart Outlet Socket ETL Certified, Work with Alexa & Google Home Assistant, IFTTT Supporting, 2.4Ghz WiFi Only -A Certified for Humans Device