This product is part of the Harmony XB4 range, an offer of Ø 22mm modular metal pushbuttons, switches, and pilot lights." "This LED bulb is an accessory for illuminated pushbutton." "It comes with BA 9s bulb base and white LED." "It is a pushbutton bulb with rated supply voltage of 6V DC and a power dissipation of 1.2W." "It weighs 0.002kg." "This product is compatible with Harmony XB4." "Harmony delivers an innovative and ergonomic design that improves the reliability of panels, machines and processes." "The modular range of Ø 22mm metal control and signaling units combine simplicity of installation, modern standard and flush mounted design."