Introducing the Edwards Signaling SD-TRM4 SD Series SuperDuct Remote Test Reset Station, designed specifically for 4-wire duct smoke detectors. This innovative device is less than 2 inches deep, making it perfect for installations in tight spaces. Equipped with a PCB-mounted photoelectric sensor featuring advanced on-board intelligence, it ensures reliable performance. Additionally, the patented differential sensing technology provides environmental compensation, enhancing its accuracy and efficiency. Upgrade your smoke detection system with this essential tool that combines convenience and cutting-edge technology. Don't miss out—order yours today and ensure safety in your environment!