{"product_id":"honeywell-sa4219-1-zone-expander-control-board","title":"Honeywell SA4219-1 Zone Expander Control Board","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell SA4219-1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSA4219-1\u003c\/strong\u003e Zone Expander Control Board, operates as a dedicated hardware component for expanded zone circuit monitoring and field loop signal routing within Honeywell security and panel platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSA4219-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA \/ As specified on hardware label\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePowered via panel multiplex expansion bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Category\u003c\/td\u003e\n\u003ctd\u003eZone Expander Module \/ Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZone Expansion Capacity\u003c\/td\u003e\n\u003ctd\u003e8 supervised field zone inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Supervision\u003c\/td\u003e\n\u003ctd\u003eEnd-of-Line (EOL) resistor circuit monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface\u003c\/td\u003e\n\u003ctd\u003eStandard panel multiplex communication loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe SA4219-1 expands physical loop density by processing up to 8 supervised field zone circuits over a multiplexed panel communication bus. Onboard signal conditioning networks establish electrical decoupling across individual input terminals, protecting low-voltage sense lines from common-mode voltage spikes and crosstalk. For system architectures incorporating analog industrial loops, remote field transmitters interface via 4-20 mA HART loop protocol through dedicated isolation barriers, ensuring precise digitized status monitoring without ground loop interference across the backplane bus.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the SA4219-1 interface with the primary control panel assembly?\u003c\/p\u003e\n\u003cp\u003eA: The SA4219-1 connects directly to the panel via a multiplexed expansion bus, receiving board operating power and transmitting digitized zone status data across the bus conductors.\u003c\/p\u003e\n\u003cp\u003eQ: What type of circuit supervision is supported on the SA4219-1 input channels?\u003c\/p\u003e\n\u003cp\u003eA: The input expansion channels utilize End-of-Line (EOL) resistor loop supervision to detect open-circuit, short-circuit, and normal loop conditions on connected field wiring.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the SA4219-1 control board inside the main system cabinet or a dedicated remote expansion box using insulated standoff supports.\u003c\/li\u003e\n\u003cli\u003eEnsure all panel power sources and battery back-up leads are disconnected before inserting the expansion board into its designated bus header.\u003c\/li\u003e\n\u003cli\u003eTerminate all field zone conductors at the removable screw terminal blocks, installing specified End-of-Line resistors at the farthest field device.\u003c\/li\u003e\n\u003cli\u003eRoute low-voltage signal wiring away from AC power conductors and earth all cable shielding to a single panel grounding terminal.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53207843701045,"sku":"SA4219-1","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/SA4219-1.png?v=1784792402","url":"https:\/\/www.5gplc.com\/products\/honeywell-sa4219-1-zone-expander-control-board","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}