UT18A/B/C/D Vantage and Continuity Tester Operating Biannual 1. Symbols referred In the manual A\ The manual In dudes necessary formation regarding the seafood usage and equipment maintenance and, before urns, read through each section of the manual. /\ Failures to read the manual o comprehend the equipment use method specified in the manual would lead to physical Injury and equipment damage. Dangerous Voltage Important Information. Pleas refer to instruction sheets.