We are factory, we can provide OEM service, if you need product with your logo, please contact us! Note: Wiring : Power must enter from the top and must be a live line + neutral (L+N) The Black model has no power meter function Black model is pure switch type, white model is multi-function type. Functions: 1.Current Litmit(1-63A adjustable) 2.Power Limit(1-26KW adjustable) 3.Over-Voltage Protection(220-265V adjustable) 4.Unde-Voltage Protection(76-240V adjustable) 5.Temperature Protection(40-150) 6.Energy Monitor 7.Timer Switch 8.Remote Control ON/OFF Remote control at anytime from anywhere your mobile phone can get Internet signal by TUYA APP/Smart Life APP, no distance limit Voice control by Amazon Alexa Echo/Google Assistant Specificaions: Working Voltage: AC90-280V, 50/60Hz Wireless Type: Wi-Fi 2.4GHz Support system: Android/IOS Installation: 35MM Din Rail Mechanical Life: Over 100000Times ON/OFF Switch