• Complies with EN50131-2-4 (CDX-DAM only)• Complies with EN50131-2-2 (CDX-DT&DAM only)• Digital quad zone logic• Active IR digital anti-masking• Tough microwave module (CDX-DT&DAM only)• Sharply-directed microwave technology (CDX-DT&DAM only)• Interchangeable main unit