If you’ve spent any time browsing tech TikTok or security forums, you’ve probably seen a small, cute device with a dolphin on the screen called Flipper Zero. Despite its toy-like look, it’s a powerful multi-tool for learning about wireless security, RFID systems, and radio communication. One of its most popular features is the Sub-GHz radio module — a part of the device that opens the door to exploring low-frequency wireless signals used by everyday gadgets.

In this post, we’ll break down what Sub-GHz is, what Flipper Zero can really do, and what to expect if you’re using it in Malaysia.

What Exactly Is Sub-GHz?

Sub-GHz simply means any radio frequency below 1 GHz (1000 MHz).
These frequencies are widely used by consumer devices because they:

• Travel farther with less power
• Penetrate walls better than WiFi
• Are cheap and efficient for manufacturers

Some common Sub-GHz frequencies include:

• 315 MHz – used by some car remotes and older gate systems
• 433 MHz – widely used in Malaysia for home remotes, IoT devices, alarm sensors
• 868 MHz – used in Europe for long-range IoT
• 915 MHz – used in the US for LoRa and other long-range applications

If you’ve ever pressed a car key fob, opened a gate, or triggered a wireless doorbell, you’ve already used Sub-GHz.

Flipper Zero & Sub-GHz: What It Actually Does

Flipper Zero includes a built-in Sub-GHz transceiver capable of both receiving and transmitting signals in the 300–928 MHz range. This allows the device to:

✔ Read (Receive) Signals

It can detect and analyze radio signals from remotes and sensors.

✔ Transmit (Send) Signals

For supported frequencies, Flipper can replay certain types of signals.

✔ Clone Simple Fixed-Code Remotes

Older remotes and low-cost RF switches use simple “fixed codes” — these can often be captured and emulated.

✔ Replay Saved Signals

Useful for testing your own home gadgets or learning how RF systems work.

✔ Learn RF Protocols

Flipper displays frequency, modulation, and protocol info, helping beginners understand how radio communication works.

What Flipper Zero Cannot Do

There’s a lot of hype online, but it’s important to stay realistic:

❌ It cannot open modern cars

Most car key fobs use secure rolling-code systems. Flipper cannot crack or replay these codes.

❌ It cannot bypass encrypted gate remotes

Newer autogates also use rolling or hopping codes.

❌ It cannot jam signals

The hardware is too weak, and intentional jamming is illegal.

❌ It cannot brute-force security systems

Sub-GHz regulations limit power output, making brute-forcing impractical.

Despite these limits, Flipper is still an excellent tool for learning RF security.

Is It Legal in Malaysia?

Yes — owning a Flipper Zero is legal.
But its usage falls under MCMC/SKMM guidelines.

Allowed:

• Scanning and testing your own devices
• Learning radio communication
• Using 433 MHz for low-power gadgets
• Capturing signals from your own gate or switches

Not Allowed:

• Interfering with others’ devices
• Attempting to open someone else’s car or gate
• Broadcasting on restricted frequencies
• Jamming or brute-force attempts

As long as you stick to your own equipment, you’re safe.

Common Malaysian Sub-GHz Devices Flipper Can Interact With

Here’s what you’ll commonly find in Malaysia:

• Home autogate remotes (315/433 MHz)
• Cheap RF smart plugs
• Wireless alarm sensors
• 433 MHz plug-and-play switches
• Simple doorbells
• Older, non-rolling-code car remotes

A lot of inexpensive devices use ASK/OOK modulation — these are easily read by Flipper.

Is Flipper Zero Worth It for Sub-GHz?

If you’re a tech hobbyist, RF learner, security researcher, maker, or someone who loves experimenting with gadgets — absolutely. The Sub-GHz feature alone is like having a portable RF lab in your pocket.

But if you expect it to be a Hollywood hacking tool, you’ll be disappointed.

Final Thoughts

Flipper Zero’s Sub-GHz capabilities make radio technology accessible to everyone. Whether you want to test your home devices, learn about wireless systems, or explore the world of low-frequency RF, it’s an amazing little tool — as long as you use it responsibly.