ZH Currtain Curtain Motor ZM99: Dual Engine Drive, Smart Control at Your Command. The ZM99 Twindrive Smart Curtain Motor is not just a curtain motor, but also a highlight that enhances the ambiance of any space. With a perfect blend of technology and aesthetics, performance and elegance, it is the smart choice for large windows in luxury homes, villa curtains, and engineering projects. It serves as the dual-core engine that ushers in the intelligent era of curtains. The ZM99 Twindrive Smart Curtain Motor Uninque Advantages: Control: RF433, Voice control; Dual-motor system; Optional ambient light strip with adjustable brightness; High load capacity.