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| Part Number | PT-1540PQ | PT-1245P-PQ | PT-2040PQ | PT-2038WQ | PT-2725WQ |
| Manufacturer | Mallory Sonalert Products Inc. | Mallory Sonalert Products Inc. | Mallory Sonalert Products Inc. | Mallory Sonalert Products Inc. | Mallory Sonalert Products Inc. |
| Series | PT | PT | PT | PT | PT |
| Packaging | Bulk | Bulk | Bulk | Bulk | Bulk |
| Product Status | Active | Active | Active | Active | Active |
| Driver Circuitry | Transducer, Externally Driven | Transducer, Externally Driven | Transducer, Externally Driven | Transducer, Externally Driven | Transducer, Externally Driven |
| Input Type | Peak-Peak Signal | Peak-Peak Signal | Peak-Peak Signal | Peak-Peak Signal | Peak-Peak Signal |
| Voltage - Rated | 5 V | 5 V | 5 V | 5 V | 5 V |
| Voltage Range | 1 ~ 25V | 1 ~ 25V | 1 ~ 30V | 1 ~ 30V | 1 ~ 30V |
| Frequency | 4kHz | 4kHz | 4kHz | 3.8kHz | 2.5kHz |
| Technology | Piezo | Piezo | Piezo | Piezo | Piezo |
| Operating Mode | Single Tone | Single Tone | Single Tone | Single Tone | Single Tone |
| Duration | - | - | - | - | - |
| Sound Pressure Level (SPL) | 85dB @ 5V, 10cm | 80dB @ 5V, 10cm | 90dB @ 5V, 10cm | 90dB @ 5V, 10cm | 90dB @ 5V, 10cm |
| Current - Supply | 1.5mA | 1.5mA | 1.5mA | 5mA | 1.5mA |
| Port Location | Top | Top | Top | Top | Top |
| Operating Temperature | -20°C ~ 100°C | -20°C ~ 100°C | -20°C ~ 90°C | -20°C ~ 70°C | -20°C ~ 70°C |
| Approval Agency | - | - | - | - | - |
| Ratings | - | - | - | - | - |
| Ingress Protection | - | - | - | - | - |
| Mounting Type | Through Hole | Through Hole | Through Hole | Panel Mount, Flange | Panel Mount, Flange |
| Termination | PC Pins | PC Pins | PC Pins | Wire Leads | Wire Leads |
| Size / Dimension | 0.669" Dia (17.00mm) | 0.496" Dia (12.60mm) | 0.866" Dia (22.00mm) | 0.945" Dia (24.00mm) | 1.181" Dia (30.00mm) |
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