S31/S31LITE Product Documents Compact Design Smart Plug with Energy Monitoring US Standard MANUALS MANUALS SPECIFICATION Read More USER MANUAL Read More Compliance Compliance S31 ETL CERTIFICATION SONOFF_S31_ETL_Cert SONOFF_S31_ETL_Security_CDR S31 RoHS REPORT Declaration of EU RoHS Conformity_Sonoff_S31 S31 FCC CERTIFICATION SONOFF_S31_FCC_ID_Cert SONOFF_S31_FCC_Part_15B_Test_Report SONOFF_S31_FCC_Part_15C_Test_Report S31 lite ETL CERTIFICATION SONOFF_S31 Lite_ETL_Cert SONOFF_S31 Lite_ETL_Security_CDR S31 LITE RoHS REPORT Declaration of EU RoHS Conformity_Sonoff_S31 Lite S31 lite FCC CERTIFICATION SONOFF_S31 Lite_FCC_ID_Cert SONOFF_S31 Lite_FCC_Part_15B_Test_Report SONOFF_S31 Lite_FCC_Part_15C_Test_Report MORE INFORMATION More information How to Enable Alexa to Act on Hunches to Help You Do Tasks?By Daniel ZhanAlexa Energy Dashboard – Monitor Your Smart Home in Alexa appBy karinflyAlexa Energy Dashboard: Track and Manage Energy Usage to Help Save Your Electricity BillsBy karinfly