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Features
Technical: Original factory replacement part. The Liftmaster 333LM 3 Button Remote Control Transmitter is a 315 MHz billion code transmitter. Codes: 9-trinary DIP switch's with 19,683 combinations. Red LED light indicates battery strength. Color coded buttons for easy identification and use with Liftmaster receivers to provide Open, Close, Stop functions for a commercial or residential garage door opener.
Compatibility: Works with Liftmaster, Chamberlain, and Sears Craftsman openers with Digital systems manufactured from 1982 to 1992 and Smart button coding systems manufactured from 1993 to 1997.
Includes: Remote Control Transmitter, 12V battery, directional visor clip, programming instructions, Manufacturer's original packaging and Manufacturer's 1-year warranty.
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door control 
