| PartNumber | KMR421NGULCLFS | KMR421NGLFS |
| Description | Tactile Switches Tact | Tactile Switches Tact |
| Manufacturer | C&K Switches | C&K Switches |
| Product Category | Tactile Switches | Tactile Switches |
| RoHS | Y | Y |
| Illuminated | Non-Illuminated | Non-Illuminated |
| Illumination Color | - | - |
| Lamp Type | - | - |
| Series | KMR4 | KMR4 |
| Brand | C&K | C&K |
| Product Type | Tactile Switches | Tactile Switches |
| Factory Pack Quantity | 6000 | 6000 |
| Subcategory | Switches | Switches |
| Part # Aliases | KMR421NG LFS ULC | KMR421NG LFS |
| Mounting Style | - | SMD/SMT |
| Actuator | - | Oval |
| Switch Function | - | OFF - (ON) |
| Operating Force | - | 2 N |
| Current Rating | - | 50 mA |
| Voltage Rating DC | - | 32 VDC |
| Voltage Rating AC | - | - |
| Power Rating | - | 1 VA |
| Ground Terminal | - | No |
| Contact Form | - | SPST |
| Termination Style | - | Gull Wing Lead |
| Length | - | 4.6 mm |
| Width | - | 2.8 mm |
| Height | - | 2.5 mm |
| Contact Plating | - | Silver |