Check the listing for details. Sears Craftsman 139.53664SRT2 Security+ 390MHz Remote Control 971LM Liftmaster. Condition: New. Listed at 24.25 USD. Sears Craftsman 139.53664SRT2 Security+ 390MHz Remote Control 971LM Liftmaster Equiv Sears Craftsman 139.53664SRT2 Security+ 390MHz Remote Control 971LM Liftmaster EquivReplaced by Liftmaster 971LMDescriptionDirectional visor clip included5-year 3V lithium battery includedFeatures Security+® rolling code technologyCompatible with LiftMaster® Security+® Garage Door Openers and Radio ControlsLiftmaster 971LM 1-Button Remote ControlGet additional access and security with our single-button remote control. Use it to open and close a single garage door or gate, or as an extra remote to turn interior lights and small appliances on inside your home.Get additional access and security with our single-button remote control. Use it to open and close a single garage door or gate, or as an extra remote to turn interior lights and small appliances on inside your home.Our basic single-button remote control isn't so basic. It can operate a single garage door or gate, or turn your garage door opener lights on/off. You can also use it as an extra remote control to turn on lights or small appliances inside your home – all from the comfort of your car. It features Security+® rolling code technology that sends a brand new code every time it is used. One 5-year 3-volt battery is included. Order the Liftmaster 971LM 1-Button Remote Control if:Your garage door opener motorhead has an orange or red learn button, or.Your garage door opener motorhead has a gray antenna.The MHz frequency of your garage door opener will determine what remote controls will work with your system!The Liftmaster 971LM 1-Button Remote Control Security+ 390 MHZ Frequency, over 100 billion codes with code rotating technology, 1 channel/button transmitter. Compatible with Chamberlain 950CB, 953CB, 956CB and Chamberlain openers with an Amber light and Redish Orange Learn button on motor head under light cover. Must have a redish orange learn button for 971LM, 972LM, 973LM, 974LM, 976LM 390 MHZ Frequency, over 100 billion codes with code rotating technology (Security+) Visor clip and Lithium battery Compatible mini remote: 970lm; Compatible keypad; 976lm If you have purple learn button, then you need 371LM, 372LM, 373LM, 374LM, 376LM, 377LM.Also known as:012381971978, 971LM Payments & Returns Policy