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| PartNumber | 21SM144 | 21SM1-T | 21SM144-T |
| Description | Basic / Snap Action Switches SPDT PLUNG QK CONN 5A 30VDC SUBMINI SW | Basic / Snap Action Switches SUBMINI SW SPDT 5A 250Vac PinPlung ACTR | Basic / Snap Action Switches SPDT PLUNGER SCR 5A 30VDC SUBMINI SW |
| Manufacturer | Honeywell | Honeywell | Honeywell |
| Product Category | Basic / Snap Action Switches | Basic / Snap Action Switches | Basic / Snap Action Switches |
| RoHS | Y | Y | Y |
| Type | Miniature | Miniature | Basic |
| Contact Form | SPDT | SPDT | SPDT |
| Switch Function | ON - (OFF), OFF - (ON) | ON - (OFF), OFF - (ON) | ON - (OFF), OFF - (ON) |
| Actuator | Plunger | Plunger | Plunger |
| Current Rating | 5 A | 5 A | 5 A |
| Voltage Rating AC | 250 VAC | 250 VAC | 115 VAC, 125 VAC, 250 VAC |
| Voltage Rating DC | 30 VDC | 28 VDC | 30 VDC |
| Operating Force | 0.8 N | 1.39 N | 3 oz |
| Termination Style | Solder Pin | Solder Turret | Screw |
| Illumination Color | - | - | - |
| Series | SM | SM | SM |
| Brand | Honeywell | Honeywell | Honeywell |
| Illuminated | Non-Illuminated | Non-Illuminated | Non-Illuminated |
| Lamp Type | - | - | - |
| Mounting Style | Chassis Mount | Chassis Mount | Chassis Mount |
| Actuator Style | Plunger | Plunger | Plunger |
| Product Type | Snap Action Switches | Snap Action Switches | Snap Action Switches |
| Factory Pack Quantity | 20 | 20 | 1 |
| Subcategory | Switches | Switches | Switches |
| Unit Weight | 0.095945 oz | 0.095945 oz | 0.095945 oz |
| Maximum Operating Temperature | - | - | + 121 C |
| Minimum Operating Temperature | - | - | - 54 C |