Accessories ILP / Illuminations / Laser, Illuminations, The ICT-R terminal box with key-operated pushbutton is used to switch the power to the internal laser on and off. The ICT-R is intended for devices with class IIIb/3B lasers to achieve compliance with laser safety regulations. The ICT-R has a removable key, switch-on delay (< 5 s), M12 plug connectors, and LEDs to indicate the operational status.