| PartNumber | HE721A2420 | HE721A2410 | HE721A2400 |
| Description | Reed Relays Relays | Reed Relays REED RELAY | Reed Relays REED RELAY |
| Manufacturer | Littelfuse | Littelfuse | Littelfuse |
| Product Category | Reed Relays | Reed Relays | Reed Relays |
| RoHS | Y | Y | Y |
| Coil Voltage | 24 VDC | 24 VDC | 24 VDC |
| Relay Contact Form | 1 Form A (SPST-NO) | 1 Form A (SPST-NO) | 1 Form A (SPST-NO) |
| Maximum Switched Current | 500 mA | 500 mA | 500 mA |
| Switching Voltage | 200 VDC | 200 VDC | 200 VDC |
| Maximum Switched Power | 10 W | 10 W | 10 W |
| Coil Resistance | 2.15 kOhms | 2.15 kOhms | 2.15 kOhms |
| Termination Style | Through Hole | Through Hole | Through Hole |
| Series | HE700 | HE700 | HE700 |
| Packaging | Tube | Bulk | Tube |
| Contact Form | SPST (1 Form A) | SPST (1 Form A) | SPST (1 Form A) |
| Brand | Hamlin / Littelfuse | Hamlin / Littelfuse | Hamlin / Littelfuse |
| Product Type | Reed Relays | Reed Relays | Reed Relays |
| Factory Pack Quantity | 25 | 500 | 500 |
| Subcategory | Relays | Relays | Relays |
| Coil Suppression Diode | - | Yes | No |
| Form Factor, or Case Style | - | DIP | DIP |
| Unit Weight | - | 0.063493 oz | - |