Check the listing for details. C mount LENS 2.4mm*4*Watec 902h c Machine Vision Camera. Condition: New. Listed at 99.99 USD. CAMERA NOT INCLUDED THIS IS FOR 2.4MM 1/2" C MOUNT LENS ONLY. The watec camera only supports video iris control as as the lens doesn't have a control board being dc as it is now stock control it won't work. I work in electronics so I understood the issue before buying the lens as I had the control board from an old lens. As far as I'm aware the WAT-902H doesn't support DC lens control - only video so there's no easy way around it. My Watec camera (WAT-902H) only has video iris control so used the video in / dc drive board from an old cctv lens to control the iris on the 2.4mm lens - works well. Ypu need to do this mod for your camera to work with the new 2.4mm c mount lens. MAKE US AN OFFER ANY ANY PRODUCT WE CARRY. FOR specialty cameras- mega pixel giving a stunning 168 degree field of view, the widest c mount lens we have seen with DC auto iris cord. we do not carry C mount with manual iris. Great wide angle when used with the watec 902h & other watec 1/2" ccd cameras using c mount lenses for machine vision type applications. or if using an nf adapter, works great for the XC-777, XC-777A, XC-777A/P XC-555, XC-55B, XC-999, XC-999P XC-003 XC-55, XC-55BB, XC-56BB (1/2-inch CCD industrial and machine vision cameras)