1.New EAS Alarm System with wide detectionto 2.5m 2.4X4 soft ... (mini 1.8m, large 2.5m) New EAS Alarm System with wide detection to 2.5m *Features TX adopts ... phase-lock and noise sliding reduction ensures the system high detecting rate.LED grading lights makes the ... rate158Hz, 168Hz, 178Hz, or 188Hz (optional)Alarm volume90db, 60db, 100db optional New EAS Alarm System with wide detection to 2.5m