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| PartNumber | ZA028LDMT3 | ZA028LDMT2 | ZA028LDMT1 |
| Description | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| Manufacturer | Mallory Sonalert | Mallory Sonalert Products Inc. | - |
| Product Category | Audio Indicators & Alerts | Buzzers | - |
| RoHS | Y | - | - |
| Voltage Rating | 28 V | - | - |
| Current Rating | 40 mA | - | - |
| Termination Style | Terminal Block | - | - |
| IP Rating | - | - | - |
| Dimensions | 22 mm L x 22 mm W x 43.5 mm H | 22 mm L x 22 mm W x 43.5 mm H | - |
| Mounting | Panel | - | - |
| Height | 43.5 mm | 43.5 mm | - |
| Length | 22 mm | 22 mm | - |
| Series | ZA | ZA | - |
| Width | 22 mm | 22 mm | - |
| Brand | Mallory Sonalert | - | - |
| Product Type | Audio Indicators & Alerts | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Audio Devices | - | - |
| Unit Weight | 1 oz | 1 oz | - |
| Packaging | - | Bulk | - |
| Frequency | - | 3.3kHz ~ 3.4kHz | - |
| Termination | - | Terminal Block | - |
| Driver Circuitry | - | Indicator, Internally Driven | - |
| Technology | - | Piezo | - |
| Input Type | - | DC | - |
| Voltage Rated | - | - | - |
| Voltage Range | - | 16 ~ 28V | - |
| Operating Mode | - | Programmable, Pin Selectable | - |
| Sound Pressure Level | - | 85dB @ 28V, 61cm | - |
| Current Supply | - | 40mA | - |
| Operating Temperature | - | -30°C ~ 50°C | - |
| Washable | - | Yes | - |
| Port Location | - | Top | - |
| Mounting Type | - | Panel Mount | - |
| Size Dimension | - | 30.7mm Dia x 43.4mm H | - |