Transmitter Solutions 390LMD21K3 Remote Replaces the 390LMD21K. LiftMaster 61LM Compatible One Button Key Chain 390MHz Digital Code Switch Type Garage Door Or Gate Opener Remote Control. Compatible With Chamberlain 750CB And Sears Craftsman 139.53708, 00953708000.
Works with LiftMaster, Chamberlain, Sears Craftsman code switch versions of garage door openers manufactured between 1984 and 1992 and is also compatible with the billion code versions that have the green learn button on the opener manufactured between 1993 and 2004 on the 390MHz frequency.

Product Description:
The Transmitter Solutions model 390LMD21K3 replaces the 390LMD21K and is directly compatible with the LiftMaster 61LM, Chamberlain 750CB and Craftsman 139.53708. This is a one button key chain gate or garage door opener remote for the code switch version of garage door or gate openers by LiftMaster, Chamberlain or Sears Craftsman that use the 9 three position (+, 0, -) 390MHz type of code switches on the garage door opener or has a Yellow, White, or Gray Learn button manufactured between 1984 and 1992. The Transmitter Solutions 390LMD21K3 can also be used with the billion code models of garage door openers that have the Green Learn button manufactured between 1993 and 2004 on the 390MHz frequency. This remote can be used to replace any of the models of remotes listed below to control one garage door or gate opener. This item is new in plastic bag and includes the key chain, battery and programming instructions.

The Transmitter Solutions 390LMD21K3 remote is directly compatible with the following models on 390MHz:
Access Master: 61AC 62AC 63AC
Chamberlain: 50 53 54 750CB 753CB 756CB 850CB 853CB 959CB 856CB
Craftsman: 139.53707 139.53708 139.53758 139.53778 139.53879 139.53859 18778
LiftMaster: 60LM 53LM 54LM 61LM 62LM 63LM 64LM 33LM 81LM 82LM 83LM 84LM 99LM 61LMC 62LMC 63LMC 64LMC 33LMC 81LMC 82LMC 83LMC 84LMC
Link Control: 61LNK 62LMK 63LNK, 81LNK 82LNK 83LNK
Master Mechanic: 856MM 853MM 850MM
Raynor: 61RDG 63RDG 64RDG 81RDG, 82RDG 83RDG 84RDG
Transmitter Solutions: 390LMD21V 390LMD21K3
Wayne Dalton: 61WD 81WD
Not all compatible models may be listed

Product Features:
Activates one code switch or billion code type device on the 390MHz frequency
Test/operate LED
Quick release key chain included
One-Year manufactures warranty

Product Specifications:
Power: 12V A23 battery (included)
Frequency: 390MHz
Codes: 19,683 set by 9-trinary (+, 0, -) code switches
Dimensions: 2.125 x 1.5 x 0.5 inches

If you are not positive that this is the correct item for you, please email us. We are more that happy to assist you in determining the correct item for your application. If you need to contact us for assistance please include the Make and Model number of the garage door opener, radio receiver or transmitter. The more information you include for us, the easier it is for us to assist you in determining the correct item. We would rather have you contact us than end up with the wrong item and have to return it.

Shipping: Most orders are shipped within 1 business day upon receipt of cleared payment. In the rare event that an item is temporarily out of stock and will take more than 2 business days to be available, we will notify you via email.
Note: Once your order has been shipped, we have no control over the time it takes the shipping carrier to deliver your order. Should you experience any problems in receiving your order, please contact us.
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