HypEye Mini from Get Hypoxic.
The HyPeye Mini camera status indicator works with most LANC equipped video camcorders. Both new and old Sony’s as well as Canon video cameras are compatible with the HyPeye Mini.
Providing a push-button-less design, the HyPeye Mini easily allows the videographer to check the statusof their video camera in all lighting situations. The three indicator system: blue for stand-by, red for record, and yellow for warnings takes the guess work out of the video camera’s status.