Code Blue CB4U00189 PoE Power Supply
Overview
The CB4U00189 is a PoE power supply from Code Blue, built to deliver 802.3af-standard power to compatible Code Blue emergency communication and paging hardware. Its IP68 rating means it holds up against sustained rain, dust, and even temporary submersion — the right spec sheet for exposed installs like emergency phone towers, parking structure call stations, and outdoor pathway blue-light units where the power component can't be protected inside a building envelope. CB4U00189 replaces or supplements the power stage on existing Code Blue installations without requiring a separate low-voltage power run.
Compatibility
This unit is designed as a component within the Code Blue emergency communication product line — confirm your specific tower, call station, or paging system model against Code Blue's documentation before ordering, since power supply revisions are tied to specific hardware generations. If you're standardizing a campus deployment, cross-check this part against your existing Code Blue product catalog listing before mixing power supply generations across towers.
Installation Notes
Because CB4U00189 draws power via 802.3af PoE, it pairs with standard PoE switch infrastructure rather than requiring dedicated local power at each pole or station — simplifying trenching and conduit runs on new installs. Review your PoE switches power budget before adding multiple units to one switch, since 802.3af allocates roughly 15.4W per port at the source. The IP68 housing tolerates direct weather exposure, but confirm connector-level sealing during installation — an unsealed cable gland defeats the enclosure rating regardless of the unit's own certification. For broader planning on power delivery across a multi-station deployment, see the PoE planning guide.
