... detection range 2. High detection rate 3. Low false alarm 4. Elegant looking Anti-shoplifting eas sensor with 1.5 - 2.2m ... , large 2.2m) Scanning rate158,168,178, or 188Hz (optional)Alarm volumeHigh, medium, or lowMaterialAluminum alloy and plastic, milky color, sony ... grey base.Size1560×360×85(mm) Anti-shoplifting eas sensor with 1.5 - 2.2m detection range