41K4629 LiftMaster CPI Interface Box
The LiftMaster 41K4629 CPI interface box from Garage Door Supply Company is a replacement module with built-in protector system that is part of the photo eye safety sensor system on LiftMaster commercial garage door operators. This 41K4629 LiftMaster CPI box (interface module) is compatible with commercial LiftMaster 3950 garage door operators and Link commercial door operators. The CPI unit is used with the included CPS protector system. For DIY projects, this 41K4629 safety beam unit has labeled connection points and pre-drilled mounting holes that make installation easy. Product Highlights:
