Visonic Visonic NEXT DUO Dual-technology Digital PIR Detector JMAC# VISONIC-NEXT-DUO The Next+ Duo is a dual-technology digital detector designed to prevent false alarms due to interferences in residential and light commercial environments. A passive infrared (PIR) sensor and a complementary active microwave sensor are combined in a... MSRP: Was: Now: $60.74 Add to Cart