BAC-5900 series, programmable, general purpose, controllers are designed to control building systems and HVAC equipment. The integrated alarming, scheduling, and trending enable these BACnet Advanced Application Controllers to be powerful edge devices for the modern smart building ecosystem.
The controllers feature simple, menu-driven setup choices using an STE-9000 series digital sensor, which can be installed permanently as the room sensor or used temporarily as a technician’s service tool.
Alternately, quick configuration of controller properties can be done using NFC (Near Field Communication) from a smart phone or tablet (using KMC Connect Lite app) while the controller is unpowered.
To meet the most demanding building automation custom requirements, these controllers are also fully programmable. Custom configuration and programming, with wizards for application programming selection/configuration, are enabled by KMC Connect software and the KMC Converge app for NiagaraAX Workbench.
KMC Converge and TotalControl software additionally provide the capability of creating custom graphical web pages (hosted on a remote web server) to use as a custom user-interface for the controllers.
They can be used with the following types of equipment: air handling units, boilers, chillers, pumps, cooling towers, roof top units, heat pump units, fan coil units, unit ventilators, and other HVAC and building automation system equipment.
Each BAC-5901 has 8 universal inputs and 8 universal outputs, which can be expanded up to 40 inputs and 40 outputs using CAN-5900 Series I/O Expansion Modules.

BAC-5901s can be used to control the following types of equipment: air handling units, boilers, chillers, pumps, cooling towers, roof top units, heat pump units, fan coil units, unit ventilators, and other HVAC and building automation system equipment.