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Firefly 390LMD21K Keychain Remote 61LM LiftMaster

Transmitter Solutions

Firefly 390LMD21K Keychain Remote 61LM LiftMaster

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Part Number
390LMD21K
Item Weight
0.8 ounces
Product Dimensions
2 x 2 x 0.5 inches
Item model number
firefly 390LMD21K

Key features

  • Blue w green button, or Black w blue button (new model)
  • One-button
  • Key chain model
  • 9 dip switches
  • 390 MHz

Specifications

ManufacturerTransmitter Solutions
Part Number390LMD21K
Item Weight0.8 ounces
Product Dimensions2 x 2 x 0.5 inches
Item model numberfirefly 390LMD21K
Size2 inches by 2 inches and very thin
ColorBlue
MaterialPlastic
ShapeRectangular keychain
Item Package Quantity1
Batteries Included?Yes
Batteries Required?No
Battery Cell TypeAlkaline
Average Battery Life5 years
ASINB002P5TS6K

About this product

Compatibility: Liftmaster 61LM CONTENTS This remote is a very small (1/2" x 1-7/8" x 1-1/2") key-chain style remote operating at 390 MHz. It achieves its small size by using state-of-the-art components. It has been designed for use with; LiftMaster dip-switch receivers. CODING Access to the remote's toggle code switch is achieved by unscrewing the back cover. Set the NINE-digit toggle code switch to match the code set in the receiver. Move switches using a small pointed object, such as a paper clip. Gently switch the small switches to either +, -, or Neutral positions. When complete screw the back cover back into position OPERATION Once the codes are set to match the transmitter codes, you may test the system. Ensure the gate or door is visible and clear before testing. Step 1- Push the remote's button from a distance of about ten feet. If the receiver activates, the switches are properly set. Step 2- Test the transmitter from several locations to discover any "blind spots" caused by interference. BATTERY ACCESS Unscrew the back cover to reach battery compartment. Be aware of battery polarity when replacing the A23 battery. TECHNICAL SPECIFICATIONS Operating Frequency- 390 MHz Number of Buttons- 1 Battery- 1 ea. 12V A23 Number Combinations- Lots :-) Operating Temperature- -20F - 100F Overall Dimensions- 1/2" x 1-7/8" x 1-1/2" Weight- 1 oz. COMPATIBLE REMOTE'S LiftMaster 61LM, 62LM & 63LM Chamberlain 750CB, 753CB & 756CB Sears Craftsman 139.5100, 139.5300, 139.53100, 139.53106, 139.53110, 139.53200, 139.532006, 139.53210, 139.53300, 139.533006, 139.53310, 139.53315, 139.53400, 139.53403, 139.53413, 139.53500, 139.535006, 139.53510, 139.53513, 139.53515, 139.53600, 139.536006, 139.53601, 139.53602, 139.53603, 139.536036, 139.53604, 139.53605, 139.53606, 139.53607, 139.53608, 139.53609, 139.53610, 139.53611, 139.53612, 139.53613, 139.53622, 139.53632, 139.53707, 139.53708, 139.53718, 139.53758, 139.53778, 139.5225SRT, 139.53225SRT, 139.53315S

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