I ordered for customer 2 security DVR's model YS-600V, one died after 48 hours was displaying no video signal, after testing the conclusion was that the board went bad.
After a few months the second DVR network interface died, it was unable to connect to the network.
I contacted Joe from Yishi, he told me that it costs more to get a replacement than order a new one, even do they boast 2 year warranty and excellent customer service....what a crock.
After countless of e mails requesting at least to be sent replacement boards ...I got no more replys.... they refuse any communications.
Please stay away from this company.....they sell substandard products...you get no customer service ...and you will loose your money.
Review about: Security Dvr.