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• Works with 99.9 percent of garage door openers
• Features Smart Learn button
• Programs in seconds
• Program up to two openers
• Design uses less plastic

• Alerts with light & sound when vehicles or pedestrians are approaching
• 1/2 mile range from sensor to base unit
• Easy installation / easy operation
• Weatherproof outdoor sensor with adjustable sensitivity control
• Expandable up to 8 sensors

• Compatible with Chain Drive Chamberlain Manufactured operators 1984-current
• Includes: Gear and Sprocket, Worm Gear, Grease, Motor Shaft Bearings, Sprocket Bearings,Instructions

• 3 button visor remote
• 315 mhz

• For Chamberlain openers manufactured 1984-curent
• Find the manufacture date under the light cover
• MUST APPLY LOW TEMP LITHIUM GREASE TO each TOOTH OF NEW GEAR
• Gear will shred within days if low temp lithium grease is not applies to each

• Detects motion up to 30 feet away
• Easy Installation / easy operation
• Weatherproof outdoor sensor with adjustable sensitivity control
• Adjustable sensitivity prevents false alerts
• Wide 120-degree angle coverage

• Order the Chamberlain Liftmaster 377LM if:
• You find PURPLE learn button on motor head under light cover
• Compatible remotes: 371lm, 372lm, 373lm, 374lm; Mini remote:370lm
• Keyless entry includes: Battery installed, installation instructions, mounting hardware (2x wood screws).
• (If learn button is redish orange on Chamberlain opener, need 976LM/977LM)

• Completely wireless - powered by one 9-volt battery (included)
• Single manufacturer/single frequency design - you pick the manufacturer and frequency for the garage door you want to open
• Weatherproof, slide-up protective cover
• Backlit keypad makes numbers easy to see, even in the dark
• Contact Chamberlain Liftmaster to make sure the 387LM is compatible with your opener.

• Works with 99.9% of garage door openers
• Smart Learn button
• Programs in seconds
• Bright, backlit keypad
• Uses a private, 4 digit code

• Works with all Chamberlain openers from 1993 to present (any Chamberlain opener with safety sensors)
• Signal reaches from greater distances
• LED notification light signals activation and helps with programming
• Easy push-button programming
• Includes battery and vehicle visor clip