... 4:3 or 16:9 Size:60''-200'' invite OEM Controller:IR or RF Tubular motor or synchronous motor ELECTRIC PROJECTION ... √ √1. Heavy-duty tubular motor, providing quality, long term reliability, with lower noise and zero vibration. Ensuring smooth and silent, trouble ... stability. (Synchronous motor also available)2. IR or RF remote control available, with built-in or external receiver for your choice.3. Wall ...