Specification Model WM 108 MProduct Type Smart Curtain Switch ModuleVoltage 90 250V AC 50 60HzCurrent 2 5A Gang Total 2 5AWireless Protocol Wi Fi BLEOperation Range 70mDimensions W x D x H 40mm x 40mm x 18mmIP Rating IP20Frequency Band 2 412 2 484GHzMaximum Radio Transmit Power 16dBmFeatures 1 Mini Size Design Compact and sleek design that saves space and looks great 2 Remote Control Control curtains from anywhere using a mobile app Voice Control Compatible with major voice assistants like Google Assistant and Alexa 3 Calibration Function Precise and quick calibration modes for accurate curtain operation 4 Smart Linkage Integrate with various smart home devices for an enhanced living experience 5 Motor Steering Option to switch motor rotation direction via app for easy adjustments Package Includes 1 x Smart Curtain Switch Module