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| PartNumber | ZA028LADL1 | ZA028LACM1 | ZA028LACT |
| Description | Audio Indicators & Alerts 10 SEC DELAY 85-95 dB 16-28 V | Audio Indicators & Alerts 16 to 28 VAC/DC 3300 +/- 500 Hz | Audio Indicators & Alerts 22MM, 16-28VAC/DC, ROHS, STK |
| Manufacturer | Mallory Sonalert | Mallory Sonalert Products Inc. | Mallory Sonalert Products Inc. |
| Product Category | Audio Indicators & Alerts | Buzzers | Buzzers |
| RoHS | Y | - | - |
| Product | Audible Signal Devices | Panel Alarms | - |
| Sound Pressure Level | 95 dBA | 85dB @ 28V, 61cm | 85dB @ 16V, 61cm |
| Tone | Continuous | Chime | - |
| Voltage Rating | 28 V | 28 VDC | - |
| Termination Style | Terminal Block | Screw | - |
| IP Rating | - | - | - |
| Diameter | 30.7 mm | 30.74 mm | - |
| Dimensions | 22 mm L x 22 mm W x 43.5 mm H | 30.74 mm L x 30.74 mm W x 43.45 mm H | - |
| Mounting | Panel | Panel | - |
| Height | 43.5 mm | 43.45 mm | - |
| Length | 22 mm | 30.74 mm | - |
| Packaging | Bulk | Bulk | Bulk |
| Series | ZA | ZA | ZA |
| Width | 22 mm | 30.74 mm | - |
| Brand | Mallory Sonalert | - | - |
| Length in | 2.232 in | - | - |
| Length mm | 56.7 mm | - | - |
| Product Type | Audio Indicators & Alerts | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Audio Devices | - | - |
| Unit Weight | 1 oz | 1 oz | - |
| Current Rating | - | 40 mA | - |
| Frequency | - | 3.3kHz | 3.3kHz |
| Termination | - | Terminal Block | Terminal Block |
| Driver Circuitry | - | Indicator, Internally Driven | Indicator, Internally Driven |
| Technology | - | Piezo | Piezo |
| Input Type | - | AC, DC | AC, DC |
| Voltage Rated | - | - | - |
| Voltage Range | - | 16 ~ 28V | 16 ~ 28V |
| Operating Mode | - | Chime | Continuous |
| Current Supply | - | 40mA | 40mA |
| Operating Temperature | - | -30°C ~ 50°C | -30°C ~ 50°C |
| Washable | - | Yes | Yes |
| Port Location | - | Top | Top |
| Mounting Type | - | Panel Mount | Panel Mount |
| Size Dimension | - | 30.7mm Dia x 43.4mm H | 30.7mm Dia x 43.4mm H |
| Length in | - | 1.71 in | - |
| Length mm | - | 43.44 mm | - |