This optical interrupt wheel “Opto Wheel” is used as a replacement on certain Genie chain glide garage door openers.

• Compatible with Models 1020L, 2020L, PCG450, PCG500ML, PCG700ML, PCG700FN, H2000C-1,  GCG350L, GCG350ML, H2000C-1, H2000C-THDS, PCG400, PCG600, PCG450L, PCG650L
• Genuine Genie replacement part