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| PartNumber | SC648ADJ | SC648AD | SC648A |
| Description | Audio Indicators & Alerts SLOW PULSE, 10-48V 1900HZ, MEDIUM | Audio Indicators & Alerts MED CONT 10-48V | Audio Indicators & Alerts MED CONT 10-48V |
| Manufacturer | Mallory Sonalert | Mallory Sonalert | Mallory Sonalert |
| Product Category | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| RoHS | N | N | N |
| Voltage Rating | 48 V | 48 V | 48 V |
| Current Rating | 20 mA | 16 mA | 16 mA |
| IP Rating | - | - | - |
| Mounting | Flush | Panel | Panel |
| Series | SC | SC | SC |
| 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 |
| Sound Pressure Level | - | 60 dBA | 68 dBA |
| Tone | - | Continuous | Continuous |
| Frequency | - | 1.9 kHz | 2.9 kHz |
| Diameter | - | 1.687 in | 1.687 in |