This looks like my remote, but how do I know if it's the right one?
1. Frequency: Check the back of your remote to make sure the
frequency of the remote is 390mhz (megahertz) or says Liftmaster, Chamberlain, or Sears Craftsman. All of these use the same frequency of 390mhz.
2. Dip Switches: Open the battery compartment on your old garage
door remote and look to see how many dip switches (tiny switches in a row)
it has. If your old remote had 9 dip switches, then it's a match for this
remote. If you don't have your old garage door remote, you can also look
to see how many dip switches are on the back of your garage door opener
(the overhead unit in your garage). The number of dip switches on the back
of the opener is the same as on the remote.
Features and Specifications
390 MHZ Frequency, works on models from 1984-1992
1 set of 9 three position dip switches
12V battery and visor clip included
Also compatible with wireless keypad model number 66LM (same as model 740CB, 139.53776, 139.53876)
Liftmaster Help, Troubleshooting, and Instructions
2. Dip Switches: Open the battery compartment on your old garage
door remote and look to see how many dip switches (tiny switches in a row)
it has. If your old remote had 9 dip switches, then it's a match for this
remote. If you don't have your old garage door remote, you can also look
to see how many dip switches are on the back of your garage door opener
(the overhead unit in your garage). The number of dip switches on the back
of the opener is the same as on the remote.
Call 1-800-482-2321
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