Stanley Access Technologies
185000
MC521 Classic Dual Controller
MC521 Classic dual (yellow face)
Identification
Yellow-face dual controller, face P/N 185000. R185000SL is the 2016 DCUSA slide listing — search cue only, not proof of drop-in fitment on every Dura-Glide header.
Do not confuse with: Not single 185000-1; not MC521 Pro 185101; not iQ 1000459.
Documented on the 2000/3000-class Dura-Glide control record and DCUSA 2000/3000 notes. 5200/5300 research index mentions the same MC521/iQ split as historical catalog language — photograph the header plate.
Also searched as R185000SL.
AutoDoor Atlas field photo. Last reviewed 2026-08-16.
Documented systems
Association is not automatic interchange. Verify the installed revision before ordering.
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