A unique camera number system from Autoscript. A large LED indicator displays the camera in green (1-9) whilst in standby and then turns red when the camera is live. Switching from green to red is achieved by a photo electric cell that can be attached to the camera tally light. +TallyPlus+ retrofits to the whole range of Autoscript TFT's and has the unique feature of a 2nd photo electric cell built into the rear of +TallyPlus+ that docks with Cue light on the TFT.