Had my surveillance cameras installed 10-18-17. Was given 2 yr. warranty.The DVR is defective, will not play back anything. Owner, Dorn Zurawski does not take or return my calls. Did a messy job with wires hanging everywhere in my basement + excess ball of wires behind my TV. Did NOT cover the outside wires with conduit as he promised. He did come to my home on 10-19-17 to cover an exposed wire in my hallway. Before he left that day he mentioned he was going to bring me another DVR that records up to two months! I believe he knew even then that my DVR was defective....since he couldnt make it play back either. Havent seen or heard from him since. That same day I left & returned to find my back door wide open- tried to playback to just a couple hrs. ......NOTHING!! He stopped taking my calls at that point. So much for my 2 yr. warranty. The DVR also displayed yr. of 2008?? So much for my security system that cannot tell me anything - purpose defeated! & he seemed like such a nice family man. :-(