eas EM systerm,eas security gate installation distant:75cm-80cm Used widely for library stores,anti-theft eas EM antenna-eas systerms ,eas sensorSize: 1450mm*550mm*40mm Material: Acrylic Way of alarm:acousti-optic alarm Detecting scope: height: 1550mm width: 1400mm~1800mm(double channel)Voltage: AC220v±20%, 50HZ Main board:cx2020 eas EM systerm/gate