BYSECUR hidden camera in smoke detector, 2 mp, 4in1, 3.6 mm, 4 in 1 (hd-tvi, ahd, hd-cvi, analogue), sensor 1/2.7" ov 2.1mp cmos 1080p, no night vision, 3.6 mm lens (92º), dimensions 119 x 56 mm