Spectrex 20/20MI - Mini Triple IR (IR3) Flame Detector - Manual (Page 45)

Spectrex Inc. - SharpEye TM Mini IR3 Flame Detector Manual – TM 787100, Rev. D April 2011
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Appendix A: Typical Wiring Configurations
Important Note
See Appendix B for Wiring for Intrinsically Safe installation
Figure 8: Connector Interface Option
Note
In the intrinsically safe model 20/20MI-XX-X-C PINs 5,6,7,8 are not connected