Emitter
Receiver
Bottom-beam-state indicator (Blue)
Test indicator (Green)
Power indicator (Green)
Lockout indicator (Red)
ON/OFF-state indicator (Green/Red)
Stable-state indicator (Green)
Top-beam-state indicator (Blue)
Lockout indicator (Red)
ON/OFF-state indicator (Green/Red)
Stable-state indicator (Green)
Top-beam-state indicator (Blue)
Bottom-beam-state indicator (Blue)
Internal error indicator (Red)
Configuration indicator (Green)
Communication indicator (Green)