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| Manufacturer | Shenzhen City Osei Electronics Ltd. |
| Category | Audio Devices |
| Price | ￥1.4 |
| Goods | AS-B4015AL-30 |
| Process Custom | Yes. |
| Brand | Fort Australia. |
| Model | AS-B4015AL-30 |
| Type | Acoustic speaker at the polar level (all pointed to the tits) |
| Rating Power | 2.0V |
| The quota's blocked. | 2.2 K. |
| Frequency | 20-16000 Hz |
| sensitivity | -30 ±2 dB. |
| Application area | For remote sound-picking devices |
| Applicable products | Law enforcement microphones, security cameras, remote voice recognition. |
| Noise ratio | 60dB |
| Specifications | 4.0*1.5 (mm) |
