SUMMARY

The Alarm Faltschloss SFL-001 of the brand SiPRi has convinced with a very good score impressively. Thus, the test product has qualified for our Qualitätssiegel.de seal of approval qualified and was ultimately rated with the final grade 1.1.

Short product info:

The Alarm Faltschloss SFL-001 from SiPRi offers security and protection against theft through a robust design and an effective alarm, ideal for bicycles and e-bikes.

This product was submitted to us for testing: Link to the product on Amazon

About the test:
We conduct our product tests according to a transparent and coherent evaluation system. The final grade includes points such as packaging, functionality, quality, customer reviews, or the price-performance ratio.
The maximum possible number of points per area is 100 points.
The following areas will be evaluated:

1. The packaging
2. The first impression
3. The Practical test
4. The price-performance ratio

Furthermore, the evaluation also includes the available product reviews and customer experiences for the product.

Important to know: 
When awarding our quality seal.de test seal, we evaluate the quality of the test product not in comparison with other products available on the market, but in comparison with our standardized quality seal.de test standard!
You can find more details about the test criteria here.

Below is our detailed test report on the product.

QUALITY SEAL.DE TEST REPORT

Product: Alarm folding lock SFL-001
Brand: SiPRi
Tested: 21.07.2025
QS-Code: 25445559

1. THE PACKAGING

In the outer packaging made of cardboard was the alarm folding lock SFL-001.
The further inner packaging consists of plastic.

We found the sustainability of the packaging to be good, as little plastic was used..

The product was very well protected by the packaging.

On the outer packaging, the brand name, address, and a contact option as well as the barcode are clearly visible.

2. THE FIRST IMPRESSION

No bad smell was detected when unpacking the product.

The alarm folding lock SFL-001 is delivered without accessories. A user manual is included. An assembly guide is included.

3. THE PRACTICAL TEST

The product was developed to effectively protect bicycles, e-bikes, and e-scooters from theft by providing a robust lock with alarm function.
The alarm folding lock SFL-001 fulfills this purpose excellently.

Below we briefly explain the functionality of the test product:
The most important function of the product is comprehensive theft protection, which is ensured by a disc locking system and a loud alarm.

The test report examined the alarm folding lock regarding alarm function, stability, handling, and transport friendliness.
The alarm reliably responds to tampering attempts and reaches a volume that provides effective deterrence.
The construction made of hardened steel offers high resistance against bolt cutter and leverage attacks.
The integrated battery allows for a long runtime and can be conveniently charged via USB.
The handling is easy, both when locking and when attaching to the bicycle.
In addition, the lock is compact and has a balanced ratio between security and transport weight. Overall, it conveys a robust and practical impression.

The tested quality features meet the established requirements of the quality inspection.


We found particularly outstanding

• • Reliable alarm: Automatically triggers in case of tampering attempts and provides effective deterrence

  • High security: Made of hardened steel for strong resistance against break-in attempts

The product has a clear benefit and thus offers the user among other things the following advantages:

• • Long battery life: Integrated battery with practical USB charging function

  • Easy handling: Intuitive locking and attachment to the bicycle

  • Compact and transport-friendly: Good balance between stability, weight, and size for daily use

The Alarm Folding Lock SFL-001 is very good to use.
Our testers found no risk of injury from sharp edges or protruding parts with proper use.

4. THE PRICE-PERFORMANCE RATIO

On the trading platform Amazon, the Alarm Folding Lock SFL-001 of the brand SiPRi can be ordered for €99.80.

Thus, this product is in the mid price segment, as there are already other folding locks available from €49.99.

16 Customers rated the product on average with 4.6 Stars.