About This 【Roller Shades Motor Control】Let your electric curtains, roller blinds, etc become smart immediately. 【External Switch Two-Way Control】DUALR3 has 6 types of external switch detection mechanisms, making it suitable for most physical switch control. 【Power Metering】The 2-Gang detects voltage, current, and power values and counts the power consumption for you independently to allow for reasonable energy consumption control. 【With The Most Features】DUALR3 has three working modes that meet the needs of different application scenarios. Remote, timing, voice control, smart scenes, and other functions are all available. 【Safe And Reliable】TUV certifications ensure a safer and more reliable product. Overview Operation Mode : ON-OFF-ON Current Rating : 15 Amps Operating Voltage : 120 Volts Contact Type : Normally Closed Connector Type : Clamp Brand : SONOFF Switch Type : DIAC Terminal : Screw Material : Polycarbonate Item dimensions L x W x H : 3 x 2 x 1 inches