Chamberlain Liftmaster manufactures door openers and related controls under the trade names of Sears Craftsman, Raynor, Access Master, Do-It, Master Mechanic, and Steel Craft, plus many other private label brands. Each of the product lines are compatible with the others. The only difference is the name on the product and the part number.
Choosing your Liftmaster / Chamberlain Garage Door Opener Keypad:
Finding a compatible Keyless Entry for your garage door use to be very confusing. Now the easiest way of finding the remote your garage door opener is to identify if the garage door opener has a learn button on the logic board. This is on the back or side of the motor unit of your garage door. If it has a learn button order the
Liftmaster 877MAX / Chamberlain 940EV
, as a direct replacement.
An example learn button is indicated below:

The learn button will be a square button near the center of your logic board. If you have an older model garage door opener, then there will be a set of dip switches that are used to program your opener instead of a learn button. Commercial GDO’s or gate openers might be located differently. Below you will find a reference for the different models of Chamberlain garage door remotes:
If you have the security plus series:(Amber)
Key Chain -
Chamberlain 956CB
3 Button -
Chamberlain 953CB
Wireless Keypad –
Chamberlain 940CBIf you have the Security Plus (ERT) series:(Purple)
Key Chain -
Chamberlain 956DDeluxe 3 Button -
Chamberlain 963D3 Button –
Chamberlain 953DWireless Keypad –
Chamberlain 940DIf you have the Dip Switch Style:
1 Button -
Chamberlain 750CBWireless Keypad –
Chamberlain 740CB