Ultimate Long-Range Telemetry for Complex Film Sets

The ARRI ERM-2400 LCS (External Radio Module) is a high-performance range extender designed to solve extreme wireless distance limitations on professional sets. By translating physical cable protocols into a highly stable 2.4 GHz wireless signal, the ERM-2400 LCS effectively extends your LCS, LBUS, or EXT (CAN bus) connections over the air. This module is an indispensable tool for commercial directors, DPs, DITs, and 1st ACs who need reliable lens and camera control far beyond the reach of standard radio transmitters.

Flawless Connection Integrity for Chase Vehicles and Steadicam Rigs

On fast-moving sets where standard signals are easily compromised, the ERM-2400 LCS delivers unshakeable performance. When a camera package is mounted to the bonnet of a lead vehicle or rigged onto a chase car, this module maintains a seamless point-to-point link to the follow vehicle. Similarly, during complex Steadicam sequences moving through multiple rooms of a house, the ERM-2400 bypasses physical barriers to secure a continuous control loop.

Precise Calibration and Real-Time Distance Readouts

The ERM-2400 LCS does not just bridge basic motorized movements; it serves as a high-speed data pipe. It enables focus pullers to receive ultrasonic rangefinder distance readouts from up to a kilometer away, ensuring tack-sharp manual focus on the longest lenses. When configured for iris adjustment with the Operator Control Unit OCU-1, the ERM-2400 provides the Director of Photography with a clear, highly precise electronic iris scale for incredibly smooth exposure adjustments.

Rugged Architecture Built for Custom Rigging

Designed to integrate directly into active production environments, the ERM-2400 LCS fits into ARRI’s robust mechanical ecosystem. It can be quickly mounted to camera frames or focus stations using the Rod Mounting Bracket RMB-3. With compatible system cabling—including specialized FS CAN bus cables—and universal support across ARRI and cmotion systems, the ERM-2400 LCS is a vital tool that gives filmmakers the freedom to shoot in the most challenging conditions.