| PartNumber | E121SD3V3GE | E121SD3V31GE | E121SD3V4GE |
| 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 | Y |
| Illuminated | Non-Illuminated | Non-Illuminated | Non-Illuminated |
| Lamp Type | - | - | - |
| Contact Form | SPDT | - | - |
| Switch Function | ON - (ON) | - | - |
| Current Rating | 1 A | - | - |
| Voltage Rating AC | 125 VAC | - | - |
| Voltage Rating DC | 28 VDC | - | - |
| Mounting Style | Through Hole | - | - |
| Termination Style | Solder Pin | - | - |
| Contact Plating | Gold Over Silver | - | - |
| Actuator | Without Cap | Without Cap | Without Cap |
| Cap Color | Black | - | - |
| Series | E020 | E020 | E020 |
| Color | Red | - | - |
| Features | Button/cap ordered separately | Button/cap ordered separately | Button/cap ordered separately |
| Housing Material | Nylon, Glass Filled | - | - |
| Length | 15.24 mm | - | - |
| Material | Nylon, Glass Filled | - | - |
| Terminal Seal | Epoxy | - | - |
| Width | 1.27 mm | - | - |
| Brand | C&K | C&K | C&K |
| Flammability Rating | UL 94 V-0 | - | - |
| Actuator Style | Without Cap | Without Cap | Without Cap |
| Life | 60000 Cycles | - | - |
| Product Type | Pushbutton Switches | Pushbutton Switches | Pushbutton Switches |
| Factory Pack Quantity | 80 | 80 | 80 |
| Subcategory | Switches | Switches | Switches |