Red plain lens for circular illuminated pushbutton Ø22 with BA9s bulb. range of product: Harmony XB4, Harmony XB5 – accessory / separate part designation: lens cap – accessory / separate part type: cap – accessory / separate part category: lighting accessories – product compatibility: BA 9s – accessory / separate part destination: illuminated push-button with flush push – cap or lens type: plain lens – quantity per set: set of 10.