Regex Tester & Validator

Matches an 18-character serial number with strict positional constraints: two leading letters (A-E, then A-C), four digits resembling a time stamp (0-2 hour tens, 0-5 minute/second tens), a literal 'B' separator, a 6-digit batch or sequence code, two uppercase alphanumeric check characters, and a trailing 3-digit suffix. Useful for validating product, equipment, or manufacturing serial numbers that embed production date, time, and batch information.