Detector For Adding Sensors To A Factory Vehicle Alarm Haida Extension bits screw together & ISL_AT040 Extension bits screw together & lock in place with a grub screw to avoid losing the extension down the wall cavity Topman Code: 2000 500 248 Pieces Replacement Packs: Part # Pack Qty Description C126 1 15 3 16 UNC C126 2 15 1 4 UNC C126 3 10 5 16 UNC C126 4 8 3 8 UNC C126 5 5 7 16 UNC C126 6 3 1 2 UNC C126 7 20 3 16 UNF C126 8 5 1 4 UNF C126 9 10 5 16 UNF C126 10 10 3 8 UNF C126 11 5 7 16 UNF C126 12 5 1 2 UNF C300 8 25 M4 X 0 Model AVSDETECTOR The AVS Detector allows extra sensors to be added to the factory system easily and cost effectively