They know NOTHING about their own product so heaven forbid you run into any technical issues!! I had the misfortune of using them and regretted it ever since. The cameras and "value" are fantastic (HDIP camera system) but their NVR sucks and has too many glitches. I would stay away from them regardless of their "sales". I would have been better off spending twice as much and getting a solid system than trying to save money and deal with people who KNOW NOTHING ABOUT THEIR OWN PRODUCT!! They have to refer to China. STAY AWAY!! I'm not affiliated with another company and simply wish someone would have warned me a few months ago. Try calling their number and 1) see if you get through to technical and 2) ask them a tech question about their NVR and see if they know what they're talking about. Most likely you'll get a guy with a very thick Asian accent saying they're busy and will return your call, (HOURS later!!) RUN FAR AWAY from using this company!!! Don't say I didn't warn you!