HDC617X 7" Middle Speed PTZ Dome Camera 4 in 1 AHD TVI CVI CVBS 2MP IMX323 IP66 120m IR 18X/33X optical zoom SKU: HDC617X18 $129.00 2MP IMX323 Auto Zoom Auto Zoom Effective Pixels 2MP Imaging Sensor IMX307IMX323 Option 18X optical zoom