| PartNumber | E121SD1AGE | E121SD1A3LE | E121SD1A3RE |
| Description | Pushbutton Switches ON-(ON) SPDT R/A PCB | 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 | N | Y |
| Illuminated | Non-Illuminated | Non-Illuminated | Non-Illuminated |
| Illumination Color | - | - | - |
| Lamp Type | - | - | - |
| Contact Form | SPDT | - | - |
| Switch Function | ON - (OFF), OFF - (ON) | - | - |
| Current Rating | 1 A | - | - |
| Voltage Rating AC | 125 VAC | - | - |
| Voltage Rating DC | 28 VDC | - | - |
| Power Rating | 400 mVA | - | - |
| Mounting Style | Through Hole | - | - |
| Termination Style | Solder Pin | - | - |
| Contact Plating | Gold | - | - |
| Actuator | Without Cap | Without Cap | Without Cap |
| Packaging | Tray | - | - |
| Series | E020 | E020 | E020 |
| Features | Button/cap ordered separately | Button/cap ordered separately | Button/cap ordered separately |
| Terminal Seal | Epoxy | - | - |
| Brand | C&K | C&K | C&K |
| Flammability Rating | UL 94 V-0 | - | - |
| Actuator Style | Without Cap | Without Cap | Without Cap |
| Product Type | Pushbutton Switches | Pushbutton Switches | Pushbutton Switches |
| Factory Pack Quantity | 80 | 1 | 80 |
| Subcategory | Switches | Switches | Switches |