Product Description:
The Transmitter Solutions model 390LMD21V2 replaces the 390LMD21V and is directly compatible with the LiftMaster 61LM, Chamberlain 750CB and Craftsman 139.53708. This is a one button visor 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 390LMD21V2 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 visor clip, battery and programming instructions.

The Transmitter Solutions 390LMD21V2 remote is directly compatible with the following models on 390MHz:
LiftMaster: 50LM 53LM 54LM 61LM 62LM 63LM 64LM 33LM 81LM 82LM 83LM 84LM
Chamberlain: 50 53 54 750CB 753CB 756CB 850CB 853CB 859CB 856CB
Sears Craftsman: 139.53708 139.53758 139.53759 139.53778 139.53879 137.53779
Transmitter Solutions: 390LMD21V 390LMD21K 390LMD21K3
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
Visor clip 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: 3.25 x 1.75 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.
International Buyers – Please Note:
Import duties, taxes and collection charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.
We do not mark merchandise values below value or mark items as ‘gifts’ - US and International government regulations prohibit such behavior.