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                                 This 512-Hz Sonde Transmitter is ideal for inspection of small cast iron and non-metallic lines. 
- Portable 512-Hz Mini-Transmitter 
- 3-4 Hours Battery Life 
- Works with Any 512-Hz Receiver 
- Runs up to 12-Ft Range 
- Powered by Non-Rechargeable #357 Button Cell 
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