| Customization: | Available |
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| Amplification Type: | Active |
| Speaker Material: | Metal |
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Description
| Specification | TBK-20 |
| Working voltage | DC9V |
| Max working current | 600mA |
| Main and assistant sound boxes | 2W-2W 100Hz-15KHz |
| Outside microphone | -48db |
| Inside microphone | -48db |
| Other function | Dual-way audio record |
| Exterior size | 158*87*46mm(Master Station) 78*20mm(Sub Station) |
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