The Muxpad II is a Data Gathering Module (DGM), which is a part of the Digitize System 3505 Supervised Polling Alarm Monitoring System. For a complete operating system, you also need a SYSTEM 3505 with the MULTIPLEX option. The standard communications format for the multiplex system is an isolated RS-422/485 driver. Other available line drivers include RS-232, Audio, Fiber Optic, Polling Radio and Ethernet.
Upon activation of any new condition, the Muxpad II communicates with the SYSTEM 3505 to advise new conditions as well as the English text message provided by the FACP. In the event of a data line error, the Muxpad II retains alarm information until communication is reestablished to the SYSTEM 3505. The Muxpad II board contains an isolated RS-422/485 serial port, an RS-232 serial port, a 5-volt switching regulator, a single FORM C relay, a watchdog timer, full lightning protection on the RS-422/485 data line and various support systems (such as 128K EPROM), and zone measurement circuitry with ground fault detection. The Muxpad II may also be used to monitor end-of-line supervised Dry Contact points of conventional control panels—fire, security, building process, etc.
For more details, including the full spectrum of FACP Manufacturers with which the Digitize Muxpad II is suited for use, please refer to cut-sheet.