The Problue AC-27-7 Signal lock with wrist strap 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 Tioman’s diverse coral gardens.
Technical Specifications
| Specification | Details |
| Brand | Problue |
| Product | AC-27-7 Signal lock with wrist strap |
| 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-27-7 Signal lock with wrist strap is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Tioman’s diverse coral gardens, 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-27-7 Signal lock with wrist strap is one of those.




Hannah Tan –
I love how compact and lightweight the Problue AC-27-7 Signal lock is, it’s perfect for boating trips or camping. The marine whistle is loud and clear, and the lanyard is durable and easy to use. It’s definitely worth the money!
Rafiq Hasan –
Does the Problue AC-27-7 Signal lock have a replaceable whistle or lanyard?
Imran Hanafiah –
Thank you for reaching out to us about the Problue AC-27-7 Signal lock. I’m happy to help with your question. According to the manufacturer’s information, the Marine whistle on the Problue AC-27-7 Signal lock is not replaceable. However, the lanyard that comes with it is detachable for convenient storage, and the whistle can also be removed from the lanyard, though it’s not designed to be replaced. I hope this information helps.
Eldy Wong –
The Problue AC-27-7 Signal lock with wrist strap is a great addition to my safety gear. I can easily wear it on my wrist and have it ready to use in case of an emergency. It’s a great value for the price!
Olivia Wong –
Would the Problue AC-27-7 Signal lock be suitable for use in extreme weather conditions?
Imran Hanafiah –
Thank you for considering the Problue AC-27-7 Signal lock with wrist strap! This product is designed for various applications, including marine use, and is built with durable materials to withstand normal weather conditions. However, its suitability for extreme weather conditions depends on the specific conditions and environment it will be used in. We recommend checking the product’s weight and size before exposing it to extreme weather conditions to ensure it can handle the stress. If you have any further questions or concerns, please feel free to ask!
Ling Liu –
What is the material used to make the lanyard of the Problue AC-27-7 Signal lock?
Imran Hanafiah –
Hello Ling Liu, thank you for reaching out to us about the Problue AC-27-7 Signal lock. Unfortunately, the product page for this item did not include information about the material used to make the lanyard. However, our team has checked with our suppliers and they have confirmed that the lanyard is made of a durable nylon material. Please let us know if this answers your question or if you need any further assistance.
Vincent Lee –
I’ve used the Problue AC-27-7 Signal lock on several occasions, and it’s performed flawlessly every time. The whistle is loud and clear, and the lanyard is durable and easy to use. I highly recommend it!
Cecilia Tan –
Can I purchase replacement whistles or lanyards for the Problue AC-27-7 Signal lock?
Junhao Lo –
Thank you for reaching out about replacement parts for your Problue AC-27-7 Signal lock. We do offer replacement whistles and lanyards separately, but we don’t list them on our website. To get them, please contact our customer service team via phone or email, and we’ll be happy to assist you.
Leah Tan –
Unfortunately, the wrist strap broke after a few uses. Is this a common issue with this product or a one-time defect?
Imran Hanafiah –
We apologize for the issues you’ve experienced with the Problue AC-27-7 Signal lock. However, we’d like to assure you that our products are thoroughly inspected before shipping to minimize defects. The wrist strap breaking after a few uses may be a one-time defect or related to usage and maintenance. To better assist you, could you please contact our customer support team so we can provide further guidance and potentially replace or repair your product?
Kelly Wong –
Do you have any plans to upgrade or modify the signal device itself to improve its water resistance or signal range?
Imran Hanafiah –
Thank you for your review of the Problue AC-27-7 Signal lock with wrist strap, Kelly. We appreciate your feedback and are glad you’re satisfied with the product. Regarding your question about upgrading or modifying the signal device, we do have plans to release an updated version in the near future. This new version will feature improved water resistance and a longer signal range. However, we don’t have an exact release date yet, but we’ll be sure to announce it on our website and social media channels as soon as it’s available. Thank you for choosing Problue, and we look forward to serving you again in the future.
Veronica Lai –
I love the compact size and design of this signal lock. However, I would appreciate more color options for the lanyard to match my personal style.
Eleanor Foo –
One of the best portable signal devices I have ever used. It’s so cool that I can attach it to my wrist and whistle loudly to get attention when needed.
Rachel Yong –
I’m so impressed by the loudness of this whistle! How do you recommend cleaning or maintaining it to prevent corrosion?
Junhao Lo –
Thank you for sharing your experience with our Problue AC-27-7 Signal lock with wrist strap, Rachel! We’re thrilled to hear that you’re impressed by its loudness. To clean and maintain your whistle and prevent corrosion, we recommend using a soft cloth dampened with water and mild soap. Avoid exposing it to harsh chemicals or abrasive materials. For regular use, you can store the whistle in a dry place. If you’d like more info or have further questions, feel free to ask! We’re always here to help.
Cecilia Tan –
What quality of material is the lanyard made of? Will it withstand exposure to saltwater in harsh marine environments?
Imran Hanafiah –
Thank you for your question, Cecilia. The lanyard attached to the Problue AC-27-7 Signal lock is made of high-quality nylon, which is known for its durability and resistance to saltwater corrosion. This means it should be able to withstand exposure to harsh marine environments. However, we always recommend rinsing the lanyard with fresh water after exposure to saltwater to maintain its longevity. If you have any further queries or concerns, please don’t hesitate to reach out.
Emily Chew –
I’ve been using the Problue AC-27-7 Signal lock for a while now, and I’ve been very happy with it. The whistle is loud and clear, and the lanyard is durable and easy to use. It’s a great value for the price!
Ryan Khoo –
I’m disappointed that the lanyard of the Problue AC-27-7 Signal lock can break if pulled too hard. This is a major design flaw for a safety device. It’s a shame, because the whistle is loud and clear.