American Dynamics, part of Tyco Security Products, announced two models of digital video recorders: the ADTVR-VS2 and ADTVR-LT. The ADTVR-VS2 is a powerful recorder in a four-channel, compact chassis. The ADVTR-LT comes in eight- and 16-channel versions, providing features such as mapping and simultaneous playback. Both recorders offer integration with Kantech access control systems. The ADTVR Viewer mobile app for Android phones, iPhones and iPads enables users to access live camera views across multiple ADTVRs and control PTZ cameras. The ADTVR Viewer can bookmark 2- by 2-multi-camera layouts, save image snapshots, and send snapshot e-mail alerts.