Modular series on-line uninterruptible power system. ENERGY STAR® qualified UPS models UPS products meeting the EPA's requirements use an average of 35% less energy than their standard counterparts. To enhance the availability and trouble-free operation, every pre-configured S5KC UPS arrives standard with one IS-UNITY-DP communications card installed. This enables you to take advantage of the remote monitoring and diagnostic service available with y. Start-up services available. cULus, CE, RoHS, Federal Communications Commission.