Sonifex HY-03DTD Dial Tone Detect Add-On Board

The Sonifex HY-03DTD is an excellent add-on board for the HY-03 product range. It can detect dial tones. The standard HY-03 products can automatically disconnect the line when K-break is sensed. A key feature of this board is its ability to detect 440Hz and 480Hz dial tones.

Using the Sonifex HY-03DTD is straightforward. Just attach it to your HY-03 product as per the instructions. When in use, it will detect the 440Hz and 480Hz dial tones. Note that you should ensure a stable power supply to the HY-03 product. For maintenance, keep it in a dry and clean environment. Regularly check the connections to make sure they are secure. If you encounter any problems, refer to the user manual or contact our customer service.