Chamberlain 940D Wireless Keyless Entry System

Chamberlain 940D Wireless Keyless Entry System

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Additional Details about:

The Sears Craftsman 139.3050 has been discontinued. In it's place the LiftMaster 877MAX direct replacement keypad will be sent out.
This item is discontinued.
Please view this replacement item:
Liftmaster 877MAX Wireless Keyless Entry Garage Door Opener
This item is discontinued. Please view this replacement item:
Product Description
Wireless Keyless Entry System


Access your garage and home without the use of a key or a remote control. The Chamberlain® Security+® Wireless Keyless Entry System can open your garage door using a code that you program directly into the unit. There is also a temporary password option that enables family, friends, or service people to enter the garage without giving them your personal code.

  • HEIGHT WITH LID CLOSED: 6-1/4 inches
  • HEIGHT WITH LID OPEN: 11-7/8 inches
  • WIDTH: 2-1/2 inches
  • DEPTH: 1-1/16 inches

•Security+® rolling code technology assures a new code is sent every time the keypad is used

•Temporary password option enables friends or service people to enter the garage without giving them your personal code

•Completely wireless – powered by one 9-volt battery (included)

•Weatherproof flip-up protective cover

•Backlit keypad makes numbers easy to see, even in the dark

•Programs in 2 easy steps

The MHz frequency of your garage door opener will determine what keyless entry system will work with your system. See below to find out which keyless entry to order.

Order the 940D if:

•Your garage door opener motorhead has a purple learn button, or

•Your garage door opener motorhead has a purple antenna, or

•Your original remote control has black buttons and this logo:

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COMMENT: I have a similar one by Carmelia W 1/3/2017
COMMENT: need to replace old one by Danny P 11/22/2016
QUESTION: have a chamberlain wireless remote mod. 940estd which one do i need to order to replace this one? by paul s 1/21/2016
STAFF ANSWER: I'm not pulling anything up under that model number of remote are you sure that is the model number? by Taylor M a
QUESTION: I have lost my papers and need to rest different code? Tell me how please. by Nita W 9/14/2015
ANSWER: I took a pic of instructions, but this site will not allow me to post it. <br />Email me at kenok74011&yahoo,comand I will reply with a pic of instructions. by K E a
STAFF ANSWER: <a href="" target="_blank"></a> by Matthew O a
QUESTION: Will this work with the Chamberlain Whisper Drive unit? by Xavier N 8/6/2015
ANSWER: Look at the color of the learn button and the color of the antenna on your motor head. <br /><br />This transmitter works for units with: orange learn button or gray antenna, or the correct logo on your old remote.<br /><br />My research indicates you need a 940EV or 940D Wireless Keyless system. by Edward J a
ANSWER: I have purchase two of these for replacement. Both are different drive units and neither on is the unit about which you ask. I followed the directions regarding the color codes on the drive unit. Both worked fine. by G. M a
ANSWER: Work well. Easy to install and get operational. by Maurice W a
QUESTION: will work with liftmaster professional formula 1 with purple learn button? model 3280; part # 41 AB 050-2. by Bill H 6/9/2014
STAFF ANSWER: Yes it will owrk on units with a purple color learn button. by Matthew O a
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