> Building Automation > Vista > TAC Xenta 451A/Xenta 452A Universal Input and Digital Output Module 
TAC Xenta 451A and 452A are Universal Input/Analog Output modules in the TAC Xenta family. They can be used as normal Xenta I/O modules or as certified LonMark® devices.
Both modules have eight universal inputs and two analog outputs. The universal inputs can be used as digital, thermistor, current, or voltage inputs. In addition, the TAC Xenta 452A is equipped with LED status indicators - one for each universal input when used for digital inputs. There is also a manual override for the analog output values. The LED colors, red or green, can be selected individually by altering the parameter settings in the TAC Menta® graphical tool.
