| PartNumber | U821SD8AV2GE | U821SD3V3GE | U821SD9ALE |
| Description | Pushbutton Switches Pushbutton | Pushbutton Switches Pushbutton | Pushbutton Switches Pushbutton |
| Manufacturer | C&K Switches | C&K Switches | C&K Switches |
| Product Category | Pushbutton Switches | Pushbutton Switches | Pushbutton Switches |
| RoHS | Y | Y | N |
| Illuminated | Non-Illuminated | Non-Illuminated | Non-Illuminated |
| Lamp Type | - | - | - |
| Current Rating | 1 A | - | 1 A |
| Voltage Rating AC | 125 VAC | - | 125 VAC |
| Voltage Rating DC | 28 VDC | - | 28 VDC |
| Power Rating | 400 mVA | - | 400 mVA |
| Actuator | Without Cap | Without Cap | Without Cap |
| Series | 8020 | 8020 | 8020 |
| Features | Button/cap ordered separately | Button/cap ordered separately | Button/cap ordered separately |
| Brand | C&K | C&K | C&K |
| Actuator Style | Without Cap | Without Cap | Without Cap |
| Product Type | Pushbutton Switches | Pushbutton Switches | Pushbutton Switches |
| Factory Pack Quantity | 40 | 40 | 1 |
| Subcategory | Switches | Switches | Switches |