Figure 9: rs-485 networking – Spectrex 20/20MPI - Commercial IR3 Flame Detector User Manual

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TM 20/20MPI, Rev (D) September 2013

Troubleshooting

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Figure 9: RS-485 Networking

Figure 10: 0-20mA Source (3-Wire) - model 20/20MPI-M

Note: The detectors are 0-20mA source only configuration.