Best key fob signal blocker – Top 3 best key fob signal blocker reviews, Buying Guide & FAQ

Signals from your key fob can be amplified to unlock your vehicle directly. To avoid this, you need a key fob signal blocker.

However, which one is trustworthy?

I’ve gone through multiple such key fob signal blockers to compile a list of the best. That is what I will share with you below.

1. VONETTI Alpha Shield 3.4 Inch Premium Keyless Go Protection

The advantage of this key fob signal blocker is that it consists of an aluminum box. That is why thieves won’t be able to take advantage of your fob to steal your vehicle. Apart from that, the aluminum material makes it completely robust. Thickness is 2 MM. That is why you won’t have to worry about dents. It works with every car Key fob, which is another reason to buy it.

Wondering about the dimensions?

Internal dimensions are 3.2″ x 0.8″ x 1.6″. In those dimensions, you can easily place are key fobs. In case you’re wondering about the external dimensions, those are 3.4″ x 1.1″ x 1.9″. That way, you can carry the key fob with you. It is not bulky or too oversized.

On the inner side, it has a lining of imitation suede. There are two advantages of this lining. Firstly, the rattling of the key fob will not take place. That is why the wear and tear of the fob is minimized. Apart from that, it does not accumulate fingerprints on the key fob even if your fingerprints are imprinted on it while placing it.

The lining also ensures that even if the key fob signal Blocker box falls accidentally, it will protect the key fob.

Despite the aluminum construction, the weight is only 80 g. That is what makes it easy to use.

With 100% RFID blocking, there is no chance of hacking or cloning your car’s Key fob. Consequently, your car is completely safe.

The cover or the top lid is easy to place and remove. Once you do so, securing the key fob is easy and since it opens instantly, accessing it is also easy.

You cannot go wrong with this key fob signal blocker with so many different features.


  • Heavy-duty aluminum construction
  • Compact and portable design
  • Comes with interior lining
  • 100% RFID blocking
  • Rattle proof
  • Fingerprint resistant


  • Packaging needs to be better

2. KENARK KK6 Plus-BR Faraday Key Fob Protector Box

The above box I have highlighted is suitable only for a single Key fob. However, at times you might have to store multiple key fobs, including your smartphone and other accessories. If that is your requirement, this car Key fob signal blocker can undoubtedly serve you well.

This box has scientific backing. It uses Faraday cage theory to ensure that no one can access the RFID signal and amplify it to steal your vehicle. That is possible because of the metal design. It shields the car Key fobs inside and blocks the RFID signal. That is why, even with the most powerful amplifier, nobody can access the key fob signal.

The modern look of the box allows you to carry it with you. Not only that, it is entirely portable due to its size. If you’re wondering about the material, it uses high-protein leather. That is why it looks pretty elegant.

The space inside is such that you can keep your credit cards, and therefore you won’t have to worry about money getting deducted from your credit card. It has enough space for smartphones.

If you’re wondering about the dimensions, those are 5.8″ x 8.2″ x 3.8″. The height is 3.8 inches. Length of 8.2 inches makes it suitable for Smartphones.

On the interior, there is a soft flannel layer. That is why your smartphone or your car Key fob won’t suffer from scratches.

You get a gold medal buckle on the outer side to lock the box. There are two such buckles. That is why securing the box is easy.

In addition to RFID signals, it blocks the GPS signals, Bluetooth signals, Wi-Fi signals, and cellular services signals. Multiple signal blocking certainly makes it an excellent choice.

Thus, when looking for a multipurpose key fob signal blocker that protects your credit cards as well, buy this one.


  • Has space for key fobs, smartphones, and credit cards
  • Elegant construction
  • Completely soft interiors
  • Superior locking mechanism
  • Blocks various types of signals
  • Portable design


  • Finishing of buckles can be better

3. KK6M-BL Faraday Key Fob Protector Box

The box I am highlighting now is another suitable option for credit cards, key fobs, and smartphones. It also utilizes the Faraday cage theory. It blocks all signals. That is only possible because of the metal construction.

Even if a signal amplifier is nearby, it won’t detect the signals because of this box. That is why it is safe.

With two different color options, aesthetic options are available.

Retro style design means that it looks great. It can go well with any decor.

Since it uses high-end protein leather, durability is excellent. Contents are entirely safe.

Gold metal buckles ensure that locking the box is undoubtedly possible.

With the help of a soft flannel layer, the box’s contents are entirely safe.

It is time to look at the dimensions of this box. Those are 3.7″ x 4.6″ x 6.6″.

Thus, when looking for a multipurpose box that blocks every signal, go with this one.


  • Highly versatile
  • Easy to secure
  • Available in 2 color options
  • Soft interior


  • Finishing can be better

When you want to protect the signals from your key fob, these are the best options you have. To choose between them, go through the buying guide below.

Key fob signal blocker buying guide:

Things to consider before buying a key fob signal blocker:

Compare the fob signal blockers on things like:

• Size:

Size is important because, most likely, you will have to take such blockers wherever you go. Therefore, they need to be portable.

• Compatibility:

While you’re looking for a Blocker box that can house a key fob easily, it is better to go with a versatile one. That way, you can use it for keeping credit cards, smartphones, and so on.

• Construction quality:

The material of the box also determines its usage and durability. That is why look at the type of metal in use and the interiors of the key fob signal blocker.

• Securing mechanism:

It should have a proper securing mechanism so that the key fob does not fall from the box. Only in that case can you go with it.


How long do key fob signal blockers last?

Such blocker boxes can easily last for 3 to 5 years. However, if you do not take care of them while traveling, they suffer from extensive wear and tear and will last for three years or less.

Are key fob signal blockers water-resistant?

Most can resist water only to a certain extent. That is why you have to be pretty careful with such boxes.

Do such boxes cause scratches?

No, they have soft interiors and therefore do not cause scratches.

Thus, when you want to buy a Blocker box that can block signals from your key fobs, these are the options you have. Many of them are suitable for protecting credit cards or smartphones as well.

I often cover such car accessories. Go through my other posts on the best magnetic key holder for car, Best 12 volt car vacuum, Best unique car seat cover to know more about such accessories.

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