The status indicators can be illuminated in three colors — green, red, and orange — by activating an external input, making it possible to use them as work instruction lights.* Additionally, the indicators are visible at a wide viewing angle, allowing for easy recognition of the curtain's status.
* The three colors are only available when using the one-line or wire synchronization systems. In "fixed mode", the indicators turn ON according to the state of the GL-S (e.g. turning ON in green when the beam axes are clear and turning ON in red when a beam axis is blocked). In "external control mode", the indicators are controlled by external inputs.