The Fortinge AC-21 Proclock is a straightforward and dependable 6-digit timer built for everyday studio work. It gives operators a clear red display that’s easy to read from across a control room or set. When paired with ERA IP, ERA Lite, or ProX teleprompters, it becomes a simple way to keep timing consistent during live or recorded productions.

The bright red LED digits stand out well in bright lighting, so talent and crew can follow the clock without straining. The unit is compact and light, which makes it easy to place on a desk, hang near a monitor, or set up in master control. Even in busy spaces with a lot of gear, it blends in without getting in the way.

The AC-21 Proclock takes its time code from an LTC SMPTE/EBU balanced input. Once it’s tied into the studio’s master clock, the timer stays in step with the rest of your system. This keeps timing consistent across teleprompters, switchers, or any other devices that rely on the same reference. After it locks in, the clock updates cleanly and stays steady without drifting.

Powering the device is simple. It runs on 9–12V and draws up to 1 amp, so it works with common studio power supplies. The 3-pin XLR input keeps the setup familiar for broadcast environments and gives the timer a secure, professional connection point.

Weighing just 1 kg, the Proclock is easy to move wherever it’s needed. Some crews keep it near the director, others mount it close to the talent, and some use it inside MCR as part of their rundown workflow. Its straightforward design makes it flexible for all of these roles.

Overall, this studio tool from Fortinge offers a bright display, clean layout, dependable sync, and simple operation. It's a small piece of gear that helps keep production timing steady, especially when paired with Fortinge teleprompter systems.

Fortinge AC-21 Proclock 6-Digit Red Timer for ERA IP, ERA Lite & ProX Studio Teleprompters