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| Part Number | WM-R57A |
| Description | SPEAKER 70DB RECT FLAT |
| Manufacturer | Panasonic Electronic Components |
| Series | WM-R |
| Part Status | Obsolete |
| Technology | Piezo |
| Type | General Purpose |
| Frequency Range | 150Hz ~ 100kHz |
| Frequency - Self Resonant | - |
| Impedance | - |
| Efficiency - dBA | 70.00 |
| Efficiency - Testing | 500mm |
| Efficiency - Type | Sound Pressure Level (SPL) |
| Power - Rated | - |
| Power - Max | - |
| Port Location | Top |
| Shape | Rectangular |
| Material - Cone | - |
| Material - Magnet | - |
| Ingress Protection | - |
| Ratings | - |
| Termination | Solder Pads |
| Size / Dimension | 2.264" L x 2.205" W (57.50mm x 56.00mm) |
| Height - Seated (Max) | 0.079" (2.00mm) |