New Super MK Relays. Models with Latching Lever Added to the Series. • Same mounting and internal wiring as the previous Super MK Relays • Built-in mechanical indicator enables checking contact operation. • Two modes can be used to check circuits for models with latching lever. • Nameplate provided on models with latching lever. • All materials are RoHS compliant. • UL and IEC (TÜV) certification.