Honeywell 4229 8 ZONE EXPANDER MODULE
Specification :
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Provides 8 end-of-line supervised zones and 2 on-board programmable form C relays
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Connection made to the control's console wires
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Supported on VISTA-20HW
Wired Zone Expander/Relay Board. Provides 8 end-of-line supervised zones and 2 on-board programmable form C relays