Product picture - Meridian Technologies DigiSlim ST-AIPHONELEF-2 Aiphone LEF Compatible Digitally Encoded Fiber Transmission System with Bi-directional Audio and Contact Closures Meridian, Technologies, DigiSlim, ST-AIPHONELEF-2, Aiphone, LEF, Compatible, Digitally, Encoded, Fiber, Transmission, System, with, Bi-directional, Audio, Contact, Closures Click the image to close this page