Veris,Veris Mini Relay,SPDT,Blade,Full,24VAC, VMD1B-F24A The Veris VMD1B-F Series are full-featured SPDT blade style relays for socket/DIN mounting The VMD1B-F Series are equipped with an LED for coil proof, a flag for contact proof, an override lever, and a push-to-test button for momentary contact control The VMD1B-F allows for instant and conclusive troubleshooting Never wonder if the relay, control system, or wiring is the cause of a problem