World's First Bluetooth Smart Slate The TC-SL1 smart slate is the world's first Bluetooth phone app syncable wireless timecode slate. Showcasing state-of-the-art features, the TC-SL1 offers users the ability to download our free timecode slate app and control your timecode clapperboard. Sync your TC-SL1 at the same time you are wirelessly Bluetooth timecode syncing your TC-1 timecode generators. All TC-SL1 Timecode Slate Features Dimmable Displays Both the backlight and dot matrix timecode displays can be dimmed. In the menu you can set either to be 0-100% bright. When you open the clapperboard slate you trigger the display and backlight to turn on. Don't Fly Off The Handle The TC-SL1 features a built-in handle so it can be operated with one hand. The top stick features a thumb notch making the process even more ergonomic.