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  • Keychain Remote Garage Door Opener Firefly 300Mhz
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Keychain Remote Garage Door Opener Firefly 300Mhz

279 customer reviews
| 27 answered questions

Price: $23.99
Sale: $13.40 & FREE Shipping on orders over $35. Details
You Save: $10.59 (44%)
In Stock.
Sold by Wright Bro's Supply and Fulfilled by Amazon. Gift-wrap available.
  • Enter your model number above to make sure this fits.
  • IMPORTANT NOTE: The remote is older dip switch style which does not sync to a garage door. This remote only works with 10 dip switch Multi-Code models
  • 10 Dip switch style remote operates on 300mhz frequency. Remote, keyring, & Battery included.
  • Compatible with Multi-Code receivers and transmitters.
  • 10 dip switch 300mhz multicode compatible
  • Keychain remote one button with 12 volt battery included.
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$13.40 & FREE Shipping on orders over $35. Details In Stock. Sold by Wright Bro's Supply and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

Keychain Remote Garage Door Opener Firefly 300Mhz + Linear 3089 1-Channel Visor Transmitter + Linear Multi-Code Visor Transmitter, 1-Channel (308911)
Price for all three: $30.39

These items are shipped from and sold by different sellers.

Buy the selected items together


Product Description

IMPORTANT NOTE: The remote is older dip switch style which does not sync to a garage door. This remote only works with 10 dip switch Multi-Code models.


Compatible with Multi-Code receivers and transmitters. 10 Dip switch style remote operates on 300mhz frequency. Keychain remote one button with 12 volt battery included. Remote, keyring, & Battery included. 10 dip switch 300mhz multicode compatible.

Product Information

Technical Details
Part Number 300MCD21K
Item Weight2.1 ounces
Product Dimensions5.7 x 3.3 x 0.4 inches
Item model number300MCD21K
Sizekey chain size
ColorGray
Power Sourcebattery-powered
Item Package Quantity1
  
Additional Information
ASINB0015GDW3U
Best Sellers Rank #3,812 in Home Improvement (See top 100)
Shipping Weight5 ounces (View shipping rates and policies)
Date First AvailableApril 22, 2004
  
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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

50 of 54 people found the following review helpful By S. McFarland on January 13, 2010
Verified Purchase
This winter the cold weather in Minnesota killed the batteries in my existing box-remotes. I needed something that I could bring indoors in my pocket while leaving the car parked outdoors for an extended period of time. I purchased two units from A Click Away Remotes, and I'm happy to say that they both work after properly configuring the dip-switches.

Initially, I thought I had one DOA remote (either the battery was dead, or the unit failed) and another remote didn't work after setting the dip-switches to what I thought was the proper position. I figured out that I had the switches flipped in the opposite direction (down needed to be up and up needed to be down - reverse to what my box-remote dip-switches were). Yeah, now one worked! After taking a closer look at the second 'DOA' remote I found that a plastic protection tab was placed between the battery and the metal spring clip attached to the circuit board. Once I removed the tab the remote worked just fine.

I would like to note that the seller A Click Away Remotes shipped me a previously opened/used unit; the plastic envelope the remote comes in was ripped open by a previous recipient, the dip-switches were obviously moved from factory-default settings and the plastic protection tab on the battery was removed. I'm not going to send the remote back because of this, but I would like to say that this is poor merchantable product attitude for a retailer to have.
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27 of 28 people found the following review helpful By Heather K3 on June 24, 2011
Verified Purchase
I live in an apartment complex with a parking gate that uses a 300 Mhz, 10-pin door opener, like this one: 2 pack Linear 3089 Gate Opener or Garage Door Opener Remotes(See Tech. Details Below). I bought this mini-opener to carry in my pocket to use on my bike. Zero problems so far. Works from a decent range, even with cars, trees, small animals in the way. (No small animals were harmed during the use of this device.)
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21 of 22 people found the following review helpful By Easy Deazy on October 19, 2010
Verified Purchase
Picked this up through amazon seller Door Openers and More. It took an extra week compared to my amazon.com package from the same order that day. No big deal, just letting people know it takes a few days longer than amazon packages.

ITEM DETAILS: The item is grade A what I expected and hoped for. 300mhz, 10 switch, One button. A little more grey than what is pictured, but still a very light grey color casing. The battery has a plastic slip so it does not drain the tiny battery while in the mail. You will need a VERY small phillips screw driver to remove the one screw that holds it all together. Then you will be able to set the 10 switches to your unique code and then unplug the plastic battery safety slip to enable the battery. The switches are VERY small, so I used my mini screwdriver to pry apart the case, and then used it to set the switches. The keychain clasp is pretty durable it appears, I trust it on my key set.

GATE DISTANCE: The distance to get it to open my gate is around 4-5 lanes of traffic, so about 30 to 40 feet I'd guess (depending on the weather.) If you are looking for one of those long-range gate openers that you can smash way before having to slow down for the gate, you better do research because the 2 I have tried do not have huge range at all (both quality made 300mhz gate openers). So, It will open probably as I start to slow down as I approach the gate, but you know DMN well I will smash it plenty of times before I get to the gate (who wouldnt?) and it won't open really until I need to start to slow down.

#1 TIP*** Also...... one last thing. If the numbers do not work on your 10 switches.... TRY TO CHANGE THEM AROUND FROM OFF/ON. I got a set of numbers and they didn't work so I switched all the OFF numbers to ON (and on numbers to off) and BAM! it worked with the opposite numbers switched!
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8 of 9 people found the following review helpful By tgs on October 20, 2012
Verified Purchase
First, loved the form factor on these and they worked well for a while AND I still use them. HOWEVER, after a couple months, one of the five remotes I bought started flashing very quickly (small LED) and the garage door just repeatedly opened and closed on it's own. The obvious issue is security. I bought extra devices and left them at home, so if they fail at the wrong time, it's an invitation for theft. New batteries do not resolve the issue - but even if it did, you shouldn't need to worry about your home being subject to such a (frankly) stupid flaw.

So if you want to use these, I'd encourage you to do 2 things. 1) manually lock the garage door when you have the remotes in the house in event they start failing in this manner. 2) Remove the batteries for extras you have or take them with you when you leave.

I really like these remotes for the price and size, but this is a gross design issue that mandates the lowest ranking because of the security issue. I don't see this reported anywhere in any other reviews, but am posting this one after a second unit failed in the exact same manner as the first. Both behaved in exactly the same manner: the red LED rapidly flashes for seconds at a time and then stops. After a few more seconds, it repeats, all while your garage door is going up and down.
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5 of 5 people found the following review helpful By Stevo on December 12, 2009
Verified Purchase
Easy to set up and it works great. Pretty good distance on it as well. Compact so it doesn't bulk up the keychain. I'm quite pleased with my purchase.
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