Control the zoom function of your cinema camera via wired or wireless connection using the ARRI ZMU-4 Zoom Control Set, thanks to its onboard ports and radio module interface. Combine the ZMU-4 with other LBUS control devices like the OCU-1 and Master Grip handles. Its slim, ambidextrous design makes it easy to attach to your camera rig or hold in your hand. The included RF-EMIP Radio Module facilitates wireless 2400 MHz connection with up to 14 channels.