The controller minimizes external control circuitry and wiring, reducing repair time and expense. It features a compact design, universal input voltage (100-240VAC, 50/60Hz and 100-250VDC), altitude compensation, power loss ride-through (TDUV and antikiss protection), embedded self-diagnostics, a real-time clock, extended contactor close-time monitoring, and tracking of contactor usage.Rockwell Automation Inc.www.rockwellautomation.com800.223.5354