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Operator only works in one direction

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Cause Solution
Bad Bottom Board – On older units Test by: Sliding the directional switch to the opposite direction. Open the door half way, now press and release the test button (M133) door should open further if it doesn’t then there is a bad bottom board. M233 door should open automatically. If it does not, replace bottom board.
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Remote Control Batteries

The batteries used in our transmitters are shown below. They can be obtained at your local drug stores.
2-button transmitter
4-button transmitter
Replacement Battery = 12v 23A
keyless entry push pad
large wireless wall push pad commercial door opener
narrow wireless wall push pad
vertical push pad
Replacement Battery = 9v
push button door opener keychain transmitter
Replacement Batteries (2) =
3v 2016
push button door opener wireless wall touch pad
Replacement Battery =
3v CR123

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