The FLK2AC/90-1000V5PK is a pocket-sized, non-contact AC voltage detector from Fluke's VoltAlert™ family designed for rapid and safe voltage testing on energized circuits. It features an always-on design with low-power circuitry to maintain battery readiness, a Battery Check button function to verify battery condition, and voltage detection capability from 90 to 1000 V ac, making it suitable for residential, commercial, and industrial applications. The device operates over a temperature range of -10°C to 50°C with humidity tolerance up to 95% (at 0–30°C), and is powered by two included AAA batteries with typical battery life exceeding one year. With Category IV 1000 V overvoltage rating, integrated clip design for pocket storage, and Fluke's two-year warranty, the 2AC provides reliable protection for electricians, maintenance personnel, and homeowners testing outlets, terminal strips, junction boxes, and electrical panels.