WCU-4 is an ARRI handheld control unit with a precise focus wheel, interchangeable engravable rings and a display with lens information. It communicates directly with ALEXA Mini, Mini LF and ALEXA 35 via their built-in radio.
Ideal for
Why ARRI WCU-4
- 3 axes with one hand – focus (wheel), iris and zoom.
- Interchangeable focus rings – 3 empty and 4 pre-marked in the set.
- Integrated display with lens data and motor status.
- Rugged cforce mini motors with consoles for 15 mm rods.
With cameras without an integrated ARRI radio, an external receiver is needed – write to us and we will prepare the rig.
Control
| Type | wireless follow focus (handheld unit) |
|---|---|
| Axes | focus, iris, zoom |
| Display | integrated, lens data |
| Gear rings | replaceable, writable |
System
| Motors in kit | 2× ARRI cforce mini |
|---|---|
| Radio | ARRI white radio (2.4 GHz) |
| Bus | LBUS |
| Compatibility | ARRI ALEXA 35, Mini, Mini LF (built-in radio) |




