Digital Remote Frequency Tester Pro vs Xhorse XDRT20: Which Is Better for Locksmiths?
In this article, we compare two remote testers for locksmiths and key shops: the Digital Remote Frequency Tester Pro and the Xhorse XDRT20 Universal Remote Frequency Tester V2. We will compare what each tester shows, where they are similar, and which one gives you more useful information when checking automotive remotes.
A remote tester is useful for more than checking if a key is sending a signal. When you are comparing an original remote with a replacement, checking an unknown key, or sorting similar remotes in your shop, the details shown on the tester can save time and help you choose the correct remote.
Two Remote Testers with Different Strengths
Digital Remote Frequency Tester Pro
This tester is made for more detailed remote checking. It shows the detected frequency on its digital screen and can identify ASK or FSK signal type.
This is useful when you are checking unknown remotes, comparing an original key with a replacement, or sorting similar remotes in your shop.
Xhorse XDRT20 Universal Remote Frequency Tester V2
The Xhorse XDRT20 is made for quick signal checking. Its LEDs show if the remote signal is inside one of the common frequency ranges.
It is simple and fast when you only need to confirm that a remote is transmitting in the expected frequency family.
Digital Remote Frequency Tester Pro vs Xhorse XDRT20
| Function |
Digital Remote Frequency Tester Pro More detailed signal data 
|
Xhorse XDRT20 Universal Remote Frequency Tester V2 
|
|---|---|---|
| Remote frequency signal test | ✓ | ✓ |
| Shows exact detected frequency | Yes - shows the detected frequency | No - shows the frequency range by LED |
| Shows ASK / FSK signal type | Yes | No |
| Can tell close frequencies apart | Yes - shows the detected frequency | No - close frequencies can use the same LED range |
| Infrared remote test | ✓ | ✓ |
| Immobilizer / transponder coil test | ✓ | ✓ |
| Keyless-Go door-handle signal test | ✓ | ✓ |
| Automatic power saving | ✓ | ✓ |
| Power | 2 × AAA batteries | 2 × AAA batteries |
Why the Frequency Display Matters
The Xhorse XDRT20 uses frequency ranges. For example, one LED covers approximately 305–320 MHz, and another covers approximately 430–436 MHz.
This is enough when you only need to know if the remote is working in the expected frequency family. But it does not tell you the exact frequency inside that range.
The tester shows the detected frequency on screen, making it easier to tell similar remotes apart.
It also shows if the signal is ASK or FSK, helping you confirm the correct remote before programming or replacement.
These all fall inside the same 305–320 MHz range, so the same LED will show.
These also fall inside the same frequency range on the Xhorse tester.
Why ASK and FSK Detection Is Useful
Two remotes can work in the same general frequency family but use a different signal type. That is why frequency alone is not always enough.
The Digital Remote Frequency Tester Pro can show whether the remote uses ASK or FSK. For locksmiths and key shops, this is useful when comparing an original remote with a replacement or checking an unknown remote before programming.
Functions Both Testers Support
- Remote RF signal testing
- Infrared remote signal testing
- Immobilizer / transponder coil signal testing
- Keyless-Go door-handle signal testing
- Automatic power saving
- 2 × AAA battery operation
Which One Is Better for Your Key Shop?
Both testers already cover the main daily checks such as RF, infrared, immobilizer coil and Keyless-Go signals. So the real choice comes down to how much information you want from the remote test.
Digital Remote Frequency Tester Pro
Best for locksmiths and key shops that regularly compare, identify or check different remote versions.
- Shows the detected frequency on screen
- Shows ASK or FSK signal type
- Helps tell close frequencies apart
- More useful when comparing original and replacement remotes
Xhorse XDRT20 Universal Remote Frequency Tester V2
Best suited to quick checks when you mainly need to know that the remote is transmitting inside the expected frequency range.
- Simple LED frequency-range display
- Fast to read during a basic remote check
- Good when the exact frequency and ASK/FSK type are not required
Why We Recommend the Digital Remote Frequency Tester Pro
The Xhorse XDRT20 is good for a quick basic check. But for a locksmith or key shop, there are many cases where you need more than just a frequency-range light.
If you are comparing an original key with a replacement, checking an unknown remote, or sorting similar remotes in stock, the Digital Remote Frequency Tester Pro gives you more useful information.
It shows the detected frequency and ASK/FSK signal type while still covering the same important daily tests such as RF, infrared, immobilizer coil and Keyless-Go signals. For regular professional remote checking, it is the more complete choice.
Choose the Tester That Gives You More Information
Check the detected frequency, identify ASK or FSK, and test RF, infrared, transponder coil and Keyless-Go signals with one compact tool.
View Digital Remote Frequency Tester Pro View Xhorse XDRT20 Remote Tester