As 2-pole changeover contact relay, modular Releco by Turck C12 interfacer provides universal socket to allow input and output relays with various voltages to be positioned on DIN rail and replaced, individually, as needed. Industrial-grade relay has blade terminals with push-to-test and pull-to-lock latches; built-in surge suppressor eliminates need to specify separate relays for ac and dc applications. Dual-status output indicator uses LED pilot light and mechanical flag.