Bel Fuse is a manufacturer of relays, transformers, circuit protection, fiber optics, and specialty magnetics. 464421 is a Reed Relay, part of their Circuit Protection product line. This is a 2 form C type relay with an actuator in a 1.4 mm x 2.6mm x 2.7mm package. It has a voltage rating of 24 V dc, 1A switching capacity (resistive load), and a 1.2 W power requirement. It also has a low temperature coefficient, low contact bounce, and low AC ripple current. It is suitable for a wide range of applications, including automotive, industrial, telecommunications, communications, and medical.