| PartNumber | ZA028LDSR8 | ZA028LDSS1 | ZA028LDSP1 |
| Description | Audio Indicators & Alerts 16 to 28 VDC 3300 +/- 500 Hz | Audio Indicators & Alerts 1MIN ONTIME 85-95 dB 16-28 V | Audio Indicators & Alerts 22MM, 16-28VDC, ROHS, STK |
| Manufacturer | Mallory Sonalert | Mallory Sonalert | Mallory Sonalert |
| Product Category | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| RoHS | Y | Y | Y |
| Product | Panel Alarms | Audible Signal Devices | - |
| Sound Pressure Level | 95 dBA | 95 dBA | - |
| Tone | Siren | Continuous | - |
| Frequency | 3.3 kHz | - | - |
| Voltage Rating | 28 V | 28 V | 28 V |
| Current Rating | 40 mA | 40 mA | 40 mA |
| Termination Style | Terminal Block | Terminal Block | Terminal Block |
| IP Rating | - | - | - |
| Diameter | 30.74 mm | 30.7 mm | - |
| Mounting | Panel | Panel | Panel |
| Length | 43.44 mm | 56.7 mm | - |
| Series | ZA | ZA | ZA |
| Brand | Mallory Sonalert | Mallory Sonalert | Mallory Sonalert |
| Length in | 1.71 in | 2.232 in | - |
| Length mm | 43.44 mm | 56.7 mm | - |
| Product Type | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| Factory Pack Quantity | 10 | 1 | 1 |
| Subcategory | Audio Devices | Audio Devices | Audio Devices |
| Packaging | - | Bulk | - |