The GF Series incorporates A & D's unique SHS technology and defies comparison with all others. A & D's revolutionary and patented Super Hybrid Sensor (SHS) technology improves response speed and minimizes maintenance costs. Its unique design provides the fastest response speed in its class--an amazing one-second. SHS combines the best of magnetic force restoration and single point parallelogram load sensing technologies. Bright, blue Vacuum Fluorescent Display. Percentage, Counting Functions & Comparator functions. ACAI Counting Function for highly accurate counting. GLP/GMP/ISO Compliance. Glass breeze break is optional.