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Technical Documents Knock listening device
| Property | Value |
| Name | Knock listening device |
| Description | Attached is a guide on how to build your own low cost knock listen amplifier. I think the whole thing cost ~$25 not including whatever headphones you decide to use. |
| Filename | Knock Listen Device.pdf |
| Filesize | 792.87 kB |
| Filetype | pdf (Mime Type: application/pdf) |
| Hits | 307 Hits |