Communications Specialists / Selectone ST-809B Miniature DTMF Decoder
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Communications Specialists / Selectone ST-809B Miniature DTMF Decoder

This unit is sealed in manufacturers bag. Cable Included.

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Stock # 98723-1
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Communications Specialists / Selectone ST-809B Selective Call and Remote Control DTMF Decoder

  • Compact Size - For Easy Mounting in Many Popular Radios
  • PC Programmable - Using Selectone Product Manager Software
  • 1 to 7 Digit Address Codes - Over 250 Million Unique Addresses
  • Alert Tone - Alerts User of an Incoming Call


The Selectone ST-809B is a miniature, universal DTMF decoder module designed for operation over any voice grade circuit such as radio, microwave, or telephone lines. Compatible with the widely used DTMF (Touch-Tone) signalling format, the ST-809B is typically used for mobile radio paging, selective calling, or remote control applications.

Due to its small size (1.34"L x 0.85"W x 0.21"H), the ST-809B is ideally suited for installation in portable and mobile two way radios. The ST-809B will respond to an address code of 1 to 7 digits in length, using any of the 16 DTMF characters. Because there are no restrictions in the use of repeated digits, this provides more than 250 million unique address codes.

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Communications Specialists / Selectone ST-809B Selective Call and Remote Control DTMF DecoderCommunications Specialists / Selectone ST-809B Selective Call and Remote Control DTMF Decoder

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