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| PartNumber | SC648MD | SC648ND | SC648MAN |
| Description | Audio Indicators & Alerts CONSTANT, 10-48V MIL/RUGGED, 1900HZ | Audio Indicators & Alerts CONSTANT, 10-48VDC 2900HZ, LOUD | Audio Indicators & Alerts CONSTANT, 10-48V MIL/RUGGED, LOUD |
| Manufacturer | Mallory Sonalert Products Inc. | Mallory Sonalert Products Inc. | - |
| Product Category | Buzzers | Buzzers | - |
| Series | SC | SC | - |
| Packaging | Bulk | Bulk | - |
| Frequency | 1.9kHz | 1.9kHz | - |
| Termination | Quick Connect Tab - 0.250" (6.35mm) | Screw Terminals | - |
| Driver Circuitry | Indicator, Internally Driven | Indicator, Internally Driven | - |
| Technology | Piezo | Piezo | - |
| Input Type | DC | DC | - |
| Voltage Rated | - | - | - |
| Voltage Range | 10 ~ 48V | 12 ~ 48V | - |
| Operating Mode | Continuous | Continuous | - |
| Sound Pressure Level | 60dB @ 10V, 61cm | 80dB @ 12V, 61cm | - |
| Current Supply | 5 ~ 20mA | 7 ~ 22mA | - |
| Operating Temperature | -40°C ~ 85°C | -30°C ~ 65°C | - |
| Washable | No | No | - |
| Port Location | Top | Top | - |
| Mounting Type | Panel Mount | Panel Mount | - |
| Size Dimension | 42.9mm Dia x 32.6mm H | 42.9mm Dia x 48.5mm H | - |