The 34538R.S magnetic limit switch is used on various chain glide model openers. The up limit switch works with the carriage to let the door opener know when to stop opening the door. The up limit switch is used at the motor head end of the rail where it opens.
Use With Opener Models: PCG500ML, PCG700ML, PCG700FN, GCG350ML, H2000C-1, H2000C, 1020L
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