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I have a NC220 camera (model NC220 1.0) and firmware version 1.1.12 Build 160321 Rel.27531 (the last). I bought this camera because I need a camera with wifi, motion detection and email alerts when it detects motion. I donīt want to use the cloud service, so I access the camera via http. The problem is that the camera hangs up and I have to plug it off and on almost every day, when it happens I cannot access the camera using http and it lose many ping requests. The wifi signal strength is 70% (it is only 8 metres away from the router). I thought TPLINK was a good trade but my experience with this product is very bad...PLEASE HELP !!!