The FLT series is a known line of electromagnetic switches that monitor both the level and temperature of fluids in a tank.

Sometimes characters are omitted on small labels; look for a longer string starting with "FLT."

Look for logos such as Filtrec, Endress+Hauser, or specialized sensor brands.

Often denotes a physical dimension, such as a 71mm diameter or a specific frame size for motors and sensors.

Standard shorthand for "Version 1," a specific voltage requirement, or a vertical mounting orientation. Specialized Component Categories