This product is no longer available and has been replaced by: COM320.
VS1 Phone Modem/Voice-Synthesizer
Services Available
Repair No
Calibration No
Free Support No


The VS1 (pn 7928) was replaced by the COM300 series. It enabled anyone to call a data logger via phone to receive a verbal report of real-time site conditions. The data logger could be programmed to report specific conditions or to allow a caller to select specific information by pressing numbers on a touch-tone phone.


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Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired) The CR10 must contain a special PROM, Library Special PROM LS5954, that supports VS1 communication. CSI recommends configuring the CR10 with 4k of memory.
CR10X (retired)
CR23X (retired)
CR500 (retired)
CR510 (retired)
CR9000 (retired)

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