The Mr. Patrol allows for you to monitor DVRs. It now supports Live and Search mode. It is easy and convenient to use. You can watch up to 16 channels on Android phone. The functions of Mr. Patrol. 1. Live View2. Search View3. 1 / 4 / 9 / 16 division support. 4. Channel switching. 5. PTZ control6. Digital Zooming7. Snapshot.