The FLIR 1.3MP HD Varifocal WDR Bullet MPX Cameras use the latest HD-CVI technology and True WDR to deliver excellent 720p picture quality over coax cabling in any lighting condition. Ideal for retrofit applications, the cameras are compatible with FLIR MPX DVRs offering an upgrade to HD resolution without the hassle of running new cables. Dual video output offers simultaneous HD and 960H video streams. The C237 series adds the ability to remotely adjust zoom and focus.