Sliding hermetical door operator SGS,CE,ISO 1. Power supply 220V 50HZ,110V 60HZ 2.Installaion Single and Bi-part Sliding door operator ... (automatic sliding door)SGS,CE,ISO1. Power supply 220V 50HZ,110V ... . 2. convenient altitude control 3. The guards equipment prevented the door from derailed . 4. according to your need, we make hoop ...