The Problue AC-27-5 Signal lock with webbing + mini compass is a diving accessory from Problue – a useful addition to any diver’s kit. Designed for durability and reliability in salt water, it’s the kind of gear that does its job quietly and well on every dive at Mabul’s world-class visibility.
Technical Specifications
| Specification | Details |
| Brand | Problue |
| Product | AC-27-5 Signal lock with webbing + mini compass |
| Type | Accessory |
| Material | – |
| Best For | Diving equipment |
Key Features
- Durable construction: Salt-water resistant and built to last.
- Practical design: Does exactly what it’s supposed to – no fuss.
- Lightweight: Adds almost nothing to your dive kit.
- Versatile: Useful across a wide range of diving situations.
Suited for Malaysian Dive Sites
The Problue AC-27-5 Signal lock with webbing + mini compass is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Mabul’s world-class visibility, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse with fresh water after salt-water use.
- Dry fully before storing.
- Inspect for wear regularly.
- Replace when it no longer functions properly.
Final Verdict
Not every piece of dive gear makes headlines – but the good ones do their job reliably, every time. The Problue AC-27-5 Signal lock with webbing + mini compass is one of those.





Jerald Wong –
Can you use the Problue AC-27-5 Signal lock close to water without worrying about rusting?
Imran Hanafiah –
Thank you for your question, Jerald! The Problue AC-27-5 Signal lock with webbing + mini compass is designed to be durable and resistant to rust. The item is made from high-quality materials, including brass, stainless steel, and nylon webbing, which are known for their resistance to corrosion. However, we always recommend applying a thin layer of waterproofing spray to protect the lock from saltwater and humidity. If you have any further questions or concerns, please don’t hesitate to reach out. We’d be happy to help!
Muhammad Naqiuddin Abdul Halim –
This product is great, it’s a good investment for anyone who loves hiking or camping. The quality is top-notch and it’s very durable.
Simone Ong –
I must say, the Problue AC-27-5 Signal lock is a great addition to any sailing enthusiast’s gear. The whistle is loud and clear, the webbing is sturdy, and the mini compass is surprisingly accurate.
Yasmine Tam –
Awesome product, good for camping and emergency situations. It’s compact and easy to use. I like the mini compass and webbing feature.
Fadhilah Tan –
Does this product come in different colors? And is the webbing made of durable material?
Imran Hanafiah –
Thank you for your review of the Problue AC-27-5 Signal lock with webbing + mini compass. We’re happy to inform you that this product is available in two colors: NY (Navy Blue) and OR (Orange). As for the webbing, it’s made of a durable nylon material that can withstand harsh outdoor conditions. We prioritized durability when selecting the material for this product.
Kimberly Tan –
Can you tell me more about the Problue AC-27-5 Signal lock’s whistle durability?
Junhao Lo –
Thank you for reaching out about the Problue AC-27-5 Signal lock! The whistle is designed to be durable for signaling in emergency situations. According to our product specifications, the Marine whistle used in this model is made from high-quality plastic that resists corrosion and wear. The webbing also provides an extra layer of protection against damage. However, we do recommend occasional cleaning and checking to ensure the whistle remains in good working condition.
Joeline Ong –
I am very satisfied with this product, it’s lightweight and easy to carry. The signal lock feature is very useful in emergency situations.
Rohini Ramachandran –
Is the Problue AC-27-5 Signal lock waterproof?
Junhao Lo –
Thank you for reaching out, Rohini. The Problue AC-27-5 Signal lock is designed to be water-resistant, but we can’t guarantee it will withstand complete submersion in water. However, the marine whistle and mini compass are securely attached to the webbing, which should provide some protection in light rain or splash exposure.
Emily Yeoh Ling –
The product has a minor quirk, sometimes the signal lock gets jammed. But overall it’s a great product and I would recommend it to others. 3.5 stars
Siew Kuan Ng –
Overall, the Problue AC-27-5 Signal lock is a solid choice for anyone looking for a reliable distress signal device. However, I wish the webbing was a bit longer to fit snugly around my wrist.
Alicia Tan Yi –
Can I use this product to signal for help in the sea? And what is the usual price of this product?
Imran Hanafiah –
Thank you for reaching out to us about the Problue AC-27-5 Signal lock with webbing + mini compass! Yes, this product is designed to be used as a signal device for help in emergency situations at sea. The included whistle and mini compass provide essential tools for navigation and signaling. As for the usual price, we apologize for the missing regular price information. Please check our website or contact our customer support for the most up-to-date pricing information.
May Lim –
I love how compact the Problue AC-27-5 Signal lock is. It fits perfectly in my life jacket’s pocket. The whistle worked well in emergency situations, and the compass helped me navigate through unfamiliar waters.