AVL - 2000 SM Surface Mount Masking TransducerAVLELEC AVL 2000 SM, is a valuable security product that can be used on any flat surface. Including windows, doors, walls, and ducts. The subtle design incorporates two part transducer transformer provides discrete placement and mounting options. The Exciter Technology in a 1", coil mounted plate, the transducer offers installation, while the transformer can be remote mounted and adjusted with variable tap settings. Note: The AVL 2000 SM, requires a