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ARRI OCU-1 Operator Control Unit Basic Set

Abel Code: AR-K2.0020002
Mfr. Code: K2.0020002
Estimated to Ship – Contact Sales for Availability
This basic set includes the ARRI OCU-1 Operator Control Unit and a Dovetail Mounting Interface.
Key Highlights
  • FIZ Override Control
  • Compatible with ARRI WCU-4
  • Control wheel, display & LBUS port


This set includes the following items:

  • ARRI OCU-1 Operator Control Unit
  • Dovetail Mounting Interface (K2.0022269)


The ARRI OCU-1 Operator Control Unit is an addition to the WCU-4 lens control system, enabling operators to override and return focus, iris, or zoom controls at the touch of a button. This device will help the user save precious time while framing shots, as the camera operator retains the ability to control the lens at all times, even when motors are attached. The override function enables the operator to make adjustments when critical focus is slightly off, and gives the focus puller an override indication on the WCU-4.

The OCU-1 is a simple, low-cost version of the ARRI Master Grip Wheel, with an identical control wheel, display, and LBUS integration in a convenient form factor that improves on-set efficiency and control. Subsequently, the Override function will be available for Master Grips as well. The device also enables control of EF lenses mounted on ARRI ALEXA Mini and AMIRA cameras without the need for external motors.

The OCU-1 is small, lightweight, and easy to use, with flexible mounting options to easily mount the device on common 15mm or 19mm rods with the purchase of an optional CLM-5/cforce mini Clamp Console 19/15mm (K2.0006176), ARRI Rosette with optional bracket (K2.0020003), or natively to male 3/8"-16 threads. The wheel can also be used to control the roll axis of the SRH-3 ARRI Stabilized Remote Head (not included).

NOTE: cforce motors and LBUS cables sold separately. 


  • Override function
    • Override and return focus, iris, or zoom control to camera operator
    • Saves precious time while framing shots
    • Offers adjustments when focus is slightly off
    • Available with ALEXA Mini and cforce mini RF
    • Available with UMC-4 in Q1/2019
  • EF lens control without additional external motors
    • Available with AMIRA and ALEXA Mini
  • Small, rugged, and lightweight
    • Weight: 0.36 lb (165.5 g)
  • Flexible mounting options
    • 3/8"-16 mounting point, dovetail mounting interface (included), rosette mounting option (sold separately), 15/19mm mounting option (sold separately)
  • Three assignable user buttons
    • Assignable as known from Master Grips

What's in the Box

  • Dovetail Mounting Interface
  • OCU-1 Operator Control Unit


Key Highlights

  • FIZ Override Control
  • Compatible with ARRI WCU-4
  • Control wheel, display & LBUS port
  • Dovetail, 3/8"-16 mounting

Compatibility - Camera


Compatibility - Lens Control System

ARRI WCU-4 Wireless Compact Unit
ARRI cforce RF Motor - Mini


Output Connector/Port:
1 x LBUS

Mechanical & Electronic Controls

Electronic Options:
1 x Thumbwheel Controller
Controls Include:
3 x Assignable User Buttons
Focus, Iris, or Zoom

Special Features

Canon EF Lenses (Focus/Iris Control)
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