MBA02040C1501FCT00 is a surface mount I/O relay from Vishay. It has a nominal voltage of 12V, a coil resistance of 150 ohms, and an operating temperature range from -25 to 70 degrees Celsius. The relay has four normally open (NO) and four normally closed (NC) contacts, with each contact rated for a maximum of 1A. It has a pick-up voltage of 8-11V and a drop-out voltage of 0-4V, for quick on and off switching of the contacts.