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.The DIN‑rail‑compatible VBD1B‑F sockets feature a slim design with finger‑safe terminals and a removable hold‑down clip.Never struggle with wire clips again.