Springer controls n5xuvdd0, unibloc pilot light – green this pilot light fits an industry standard 22 mm panel hole. This item is not a complete system. The unibloc series pilot lights include a bezel, a colored lens, and a full voltage (will power any voltage led) power supply in one piece. This light would most commonly be paired with an led with a voltage to match line power required. Complete units with leds are available in 24 and 120 volt options.