The 91A1A-B24-B10L is a 5/8" square single-turn panel control potentiometer manufactured by Bourns, designed for applications requiring electrical circuit isolation and reliable resistance control. This model features a conductive plastic element with standard resistance ranges from 1 kilohm to 1 megohm, offering linear taper characteristics with ±5% independent linearity and total resistance tolerance of ±0.10% or ±20%. The potentiometer is available with metal or plastic shaft options and provides virtually infinite electrical circuit isolation, making it suitable for audio equipment, instrumentation, and consumer electronics where precise volume or parameter adjustment is required. Its RoHS-compliant construction ensures environmental compliance for modern applications.