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| PartNumber | ZA028MADL1 | ZA028MACM1 | ZA028MACT |
| Description | Audio Indicators & Alerts 10 SEC DELAY 75-85 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 Products Inc. | Mallory Sonalert Products Inc. | - |
| Product Category | Buzzers | Buzzers | - |
| Series | ZA | ZA | - |
| Product | Audible Signal Devices | Panel Alarms | - |
| Packaging | Bulk | Bulk | - |
| Termination Style | Screw | Screw | - |
| Voltage Rating | 16 V to 28 V | 28 VDC | - |
| Mounting | Panel | Panel | - |
| Length | 56.7 mm | 43.44 mm | - |
| 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 | Continuous, 10 Sec On Delay | Chime | - |
| Sound Pressure Level | 75dB @ 16V, 61cm | 75dB @ 28V, 61cm | - |
| 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 | - |
| Diameter | 30.7 mm | 30.74 mm | - |
| Dimensions | 56.7 mm L | 43.44 mm L | - |
| Length in | 2.232 in | 1.71 in | - |
| Length mm | 56.7 mm | 43.44 mm | - |
| Tone | Continuous | Chime | - |
| Current Rating | - | 40 mA | - |