INTRODUCTION ............................................................11
Unpacking ............................................................................................. 11
Description ............................................................................................ 11
INSTALLATION ..............................................................12
Listening Mode ...................................................................................... 13
Polling Mode .......................................................................................... 14
Split Address Mode ............................................................................... 14
4-20 mA Configuration ...................................................................... 16
4-20 mA Output Loop-powered Operation ........................................ 17
WIRING DETAILS ..........................................................20
SPECIFICATIONS ..........................................................21
LED Position and Significance .......................................................... 21
DIP Switch Settings ........................................................................... 23
Limited Warranty ................................................................................... 25
Re-Stocking Policy ................................................................................ 25
Exclusions ............................................................................................. 26
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Contents
420I User Manual
Honeywell
ix