Day and night ..

Have QuattSecure with 4 cameras in operation, connection, coupling, router (LAN connection) are done quickly without problems, without a PC, and the router does not "bend". Provided, of course, a power supply close to the mounting locations of the cameras. Quick installed the app on the iPad and also external access working.
Image Quality: The cameras can of course not compete with HD-SDI, but in daylight you provide good quality, face recognition is given to about 8 m, more is to be expected in radio technology and price / performance. On the small screen, the picture even looks really good.
In the dark, it is problematic that 15m night vision are simply not present in outdoor use, even when bright reflective surfaces are present. Have solved with IR-LEDs (940nm), but beware the problem, since there are also offers from reputable manufacturers that bring about as much as a candle.
Radio transmission, the figure with the 300 m range does not really help. Promote to check the distance between the antennas (basic camera) as the shortest distance (straight line). Is a concrete floor and roof installation in addition still a wall in the way, the signal is not transmitted even at 12 m. With a camera, I actually overcome 3 masonry, guess, but here the help window. In a problematic camera, I then "suspended" the antenna with 10 m extension cable bypassed an outer wall and an inner wall taken out of alignment. Was surprised that the signal arrived despite the line resistances. The offer on the Internet longer antennas for wireless cameras with +7 dB power gain have incidentally brought no advantage to me.