| PartNumber | SCE028MD3SR3B | SCE028MD3SD5B | SCE028MD3SR4B |
| Description | Audio Indicators & Alerts FAST SIREN 16-28VDC, 3KHZ, MED | Audio Indicators & Alerts 1 MIN ON/DBL PULSE 16-28VDC, 3KHZ, MED | Audio Indicators & Alerts SLOW SIREN 16-28VDC, 3KHZ, MED |
| Manufacturer | Mallory Sonalert | Mallory Sonalert | Mallory Sonalert |
| Product Category | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| RoHS | Y | Y | Y |
| Type | Siren (Fast Siren) | - | Siren (Slow Siren) |
| Voltage Rating | 28 V | 28 V | 28 V |
| Current Rating | 40 mA | 40 mA | 40 mA |
| IP Rating | - | - | - |
| Series | SCE | SCE | SCE |
| Brand | Mallory Sonalert | Mallory Sonalert | Mallory Sonalert |
| Product Type | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Audio Devices | Audio Devices | Audio Devices |