ETC 42550LT-5 25-to-50-Degree Zoom Lens Tube - Silver 100741877 There is a USB firmware

There is a USB firmware update port built-in plus advanced control options such as: 16-bit fine pan and tilt

red/green laser and white strobe effect

Dimensions (with optional dome filter): 39

Weight Capacity: 2

ETC 42550LT-5 25-to-50-Degree Zoom Lens Tube - Silver 100741877 There is a USB firmwareETC 42550LT 5 25 to 50 Degree Zoom Lens Tube Silver ETCs 42550LT is a 25 50 zoom lens tube assemblyin Silverdesigned to be used with ETCs Source Four incandescent and LED ellipsoidal light engine bodies. ETCs patented one hand zoom and focus operation makes adjusting the lens simple and quick. But the best part is that Source Four Zoom has all the advantages of the revolutionary fixed focus Source Four: bright even field, cool beam, and amazing