●Voice Supported: You can control the voice while connecting to Amazon Alexa and Google Home ●Handsfree: Press the switch to open and close the curtain freely ●Low Operating Noise: Adopts a silent design that reduces noise during operation and prevents discomfort even in a quiet environment ●Ideal places: Ideal for heavy curtains such as auditories, lectures, stages, gymnasiums, etc ●Input Power: AC 100 - 240 V wide input power supply range