Alerton's BACtalk VLCs are high-performance, fully programmable logic controllers designed for control of central plant systems, air handling units, any type of terminal unit, and various control and process equipment. Every VLC is BACnet-compliant. As a native BACnet controller, it requires no proprietary chipsets to integrate seamlessly with your BACnet system. All inputs are 10-bit resolution. VLC-853—Eight 10-bit inputs, five binary outputs, and three 8-bit analog outputs.