1.RF EAS alarm system SCC3833 2.4X4 soft label: 1. ... 8m, large 2.0m) 3.Elegant looking RF EAS alarm system SCC3833 *Features TX adopts four frequencies modulation technology ... ensures high sensitivity, high detecting rate, and low false alarm rate.Advanced SMT processes, coupled with rigorous quality control, ... 200cm Scan rate158Hz, 168Hz, 178Hz, or 188Hz (optional)Alarm volume90db, 60db, 100db optional