Fangrui Product Details Remote Control At Anytime From Anywhere Schedule/timer/loop Timer,energy Monitoring Working Voltage:ac 90-300v 50/60hz Mechanical Life: Over 100000 Times Working Temperature: -2570 Colour:white Material:pc Note: This Meter Only Supports 2.4g Wireless Network, Not For 5g This Decive Is Not Compatible With For Home Assistant, Please Use The Device In Smart Life App/ Tuya App. Wiring: Power Must Enter From The Top And Must Be Live Line + Neutral Line (l+n). Live Line + Live Line (l+l) Cannot Be Used. Tob9s-vap Function: Remote On/off Time Control Function Relay Last Status Voltmeter Ammeter Power Meter Active Power Over Voltage Protection Under Voltage Protection Over Current Protection Over Power Protection Package Contents: 1 X Smart Switch Energy Meter Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.