Campbell Scientific, Inc. Datasheets for Network Modems

Network modems (modulators-demodulators) are devices or programs that allow computers to transmit data over telephone lines. They convert digital computer data to analog sound waves and then demodulate the carrier signals to decode the transmitted information.
Network Modems: Learn more

Product Name Notes
Campbell Scientific’s COM320 voice-synthesizer modem provides a CR800, CR850, CR1000, or CR3000 datalogger with speech capability—thus enabling the user to call a site for a spoken summary of real-time or...
The COM220 modem enables communications between a computer and a Campbell datalogger via a public switched telephone network. A Hayes-compatible modem is required at the base-station computer while a COM220...
Two SRM-5A RAD Short Haul Modems support local communications between Campbell Scientific dataloggers and a computer with an RS-232 serial port. These asynchronous modems use a 4-wire unconditioned telephone line...