| PartNumber | AT421C | AT421D | AT421B |
| Description | Industrial Panel Mount Indicators / Switch Indicators RED FILTER | Industrial Panel Mount Indicators / Switch Indicators AMBER FILTER FOR LW31 ROCKERS | Industrial Panel Mount Indicators / Switch Indicators WHITE CAP FILTER |
| Manufacturer | NKK Switches | NKK Switches | NKK Switches |
| Product Category | Industrial Panel Mount Indicators / Switch Indicators | Industrial Panel Mount Indicators / Switch Indicators | Accessories |
| RoHS | Y | Y | - |
| Type | Lens | Lens | Lens |
| For Use With | Rocker Switches, Snap in | Rocker Switches, Snap in | Rocker Switches Snap in |
| Designed for | LW Series | LW Series | LW Series |
| Termination Style | Snap In | Snap In | Snap On |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Width | 9.5 mm | 9.5 mm | 9.5 mm |
| Color | Red | Amber | White |
| Height | 9.9 mm | 9.9 mm | 9.9 mm |
| Length | 16.3 mm | 16.3 mm | 16.3 mm |
| Material | Polycarbonate | Polycarbonate | Polycarbonate (PC) |
| Product | Indicators | Indicators | Indicators |
| Series | LW AT | LW AT | AT |
| Brand | NKK Switches | NKK Switches | - |
| Product Type | Panel Mount Indicators / Switch Indicators | Panel Mount Indicators / Switch Indicators | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Switch Accessories | Switch Accessories | - |
| Part # Aliases | AT-421-R | AT-421-D | - |
| For Use With Related Products | - | - | AT420 Rocker |
| Accessory Type | - | - | Filter |
| Packaging | - | - | Bulk |
| Part Aliases | - | - | AT-421-W |
| Size Dimension | - | - | - |
| Thread Size | - | - | - |
| Shaft Size | - | - | - |