Black Mahogany Moodymann Rare here. Sanitas Sbm 09 Manual here. I had the same issue yesterday with my remotes which are model 850CB. I fixed it by following these steps on Chamberlain's help site: 1.

Press & release the 'learn' button on the motor unit. Within 30 seconds, press and hold the button on the remote. Release the remote button when the light bulb on the motor blinks.

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