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ratgdo control board, USB cable, USB power supply and wire harness for connecting to the garage door opener terminals. Works with: Chamberlain / LiftMaster security + 2.0 yellow button openers Chamberlain / LiftMaster security + 1.0 purple button openers Chamberlain / Liftmaster security + 1.0 red button openers Chamberlain / Liftmaster dry contact red button openers Any garage door or gate opener that supports dry contact controls (limit switches are required). Firmware not included. All sales final.

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