| PartNumber | ZT028LDMT3R | ZT028LDMT6R | ZT028LDMT4R |
| Description | Audio Indicators & Alerts LED 20-28 Vdc RED 85-95dB FAST CHIME | Audio Indicators & Alerts LED 20-28 Vdc RED 85-95dB FAST SIREN | Audio Indicators & Alerts LED 20-28 Vdc RED 85-95dB SLOW WARBLE |
| Manufacturer | Mallory Sonalert | Mallory Sonalert | Mallory Sonalert |
| Product Category | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| RoHS | Y | Y | Y |
| Product | Alarms | Alarms | Alarms |
| Sound Pressure Level | 95 dBA | 95 dBA | 95 dBA |
| Frequency | 3.9 kHz | 3.9 kHz | 3.9 kHz |
| Voltage Rating | 24 V | 24 V | 24 V |
| Current Rating | 40 mA | 40 mA | 40 mA |
| Termination Style | Terminal Block | Terminal Block | Terminal Block |
| IP Rating | - | - | - |
| Diameter | 22 mm | 22 mm | 22 mm |
| Height | 43.44 mm | 43.44 mm | 43.44 mm |
| Packaging | Bulk | Bulk | Bulk |
| Series | ZT | ZT | ZT |
| Brand | Mallory Sonalert | Mallory Sonalert | Mallory Sonalert |
| Product Type | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| Subcategory | Audio Devices | Audio Devices | Audio Devices |
| Type | - | Siren (Fast Siren) | - |