The APC UPS control module offers DC input to DC output for industrial equipment support. It features 0-5V signalling relay contacts, up to 4 total external battery pack support for additional runtime, LED indicators and EPO switch for better control over the industrial controls infrastructure. It comes with a 2-year standard warranty. DC input - DC output to support industrial equipment such as PLCs, HMIs, Industrial PCs LED indicators to check UPS status EPO switch for immediate shutdown in the event of an emergency Metal grey color IP20 degree of protection External battery system