--- product_id: 262238 title: "535 Acme -'silent dog whistle'" price: "£32.67" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/262238-535-acme-silent-dog-whistle store_origin: GB region: United Kingdom --- # Adjustable frequency 5400-12800Hz Sound range over 1 mile Durable solid brass, nickel-plated finish 535 Acme -'silent dog whistle' **Price:** £32.67 **Availability:** ✅ In Stock ## Summary > 🎵 Train smarter, not louder — the whistle that speaks dog’s language. ## Quick Answers - **What is this?** 535 Acme -'silent dog whistle' - **How much does it cost?** £32.67 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/262238-535-acme-silent-dog-whistle) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Solid brass construction with nickel plating ensures durability through every training session. - • **Trusted Legacy:** Crafted in the UK by ACME, specialists with 150+ years of whistle-making expertise. - • **Long-Distance Reach:** Command attention up to a mile away with minimal effort—perfect for outdoor training. - • **Human-Friendly Feedback:** Quiet audible tone confirms whistle activation without annoying bystanders. - • **Precision-Tuned Control:** Adjust frequency seamlessly from 5400 to 12800Hz for tailored training signals. ## Overview The ACME 535 Silent Dog Whistle is a professional-grade training tool featuring an adjustable frequency range of 5400-12800Hz, capable of projecting sound over a mile. Designed with special air directors and a protective end cap, it produces a high-pitched tone audible to dogs but minimally intrusive to humans. Made from solid brass with a nickel-plated finish, this whistle combines durability with precision, backed by over 150 years of ACME craftsmanship. Ideal for serious trainers seeking effective, long-distance communication with their dogs or other trained animals. ## Description From the heart of the Industrial Revolution to today, ACME Whistles has been an emblem of trust, craftsmanship, and innovation. With over a century and a half of experience, we're not just making whistles; we're crafting legacies. Trusted by Professionals Visit the Store Trusted by Professionals Visit the Store Where are your whistles made? All our whistles are made in our factory in Birmingham, United Kingdom and have been made here since 1870, over 150 years! How did we get our start? It started with a young man called Joseph Hudson who trained as a toolmaker for 7 years and learned the skills that made him a superb craftsman in metal. Some of the first whistles to come off the production line were the The Metropolitan police whistle and the Boatswain Whistle. Why do we love what we do? From dog training to sports and safety. THE ACME whistle range continues to touch many lives. Where are your whistles made? All our whistles are made in our factory in Birmingham, United Kingdom and have been made here since 1870, over 150 years! How did we get our start? It started with a young man called Joseph Hudson who trained as a toolmaker for 7 years and learned the skills that made him a superb craftsman in metal. Some of the first whistles to come off the production line were the The Metropolitan police whistle and the Boatswain Whistle. Why do we love what we do? From dog training to sports and safety. THE ACME whistle range continues to touch many lives. Whistles for everyone Visit the Store Whistles for everyone Review: The best training whistle on the market that I know of. - I bought this exact whistle years ago for military K9 training and it was amazing. Recently I thought about having a strong recall for my cat and thought there is no reason this would not work great with my Cat. Disclaimer: My cat has a very high food drive. First time I blew the whistle the cat sought it out through sheer curiosity alone and he was rewarded. I repeated several times & and he learned that the whistle meant reward. I started using it for calling him to meal times and small to medium rewards in different locations of the house and at various times. He had to work to find me increasing the drive. I then paired the whistle to his name. We are doing very well with his training and still on a 1 to 1 schedule. We are going to start using his name more and the whistle less and put him on a variable reward schedule soon. The whistle will eventually be used on occasion to keep up the training but it will also be relegated to an emergency type recall for the cat (for example he gets out of the house and I absolutely need to recall him to get him back). This is a great whistle and a great tool for a training an animal that has a medium to high drive. If your animal (cat or dog) is low drive you might not get similar results but please do not make the mistake of blaming this amazing whistle. I am going to be purchasing my second whistle for my wife’s use today. I hope this helps someone make an informed decision. Review: Best Training Whistle on the Market! It is NOT a Miraculous Fix! - I'm really not sure what all of the consumers who rated this whistle poorly were expecting, but they obviously weren't expecting anything realistic. This Acme Whistle #535 is a top-of-the-line training tool used most commonly with dogs, but is also the same bridge whistle used in training many marine mammals (such as dolphins and orca/killer whales) in several facilities all over the world. There is no such thing as a miracle product. With that said, there is nothing in the product description that claims that this is either a whistle to "annoy" a dog, a whistle make a dog stop barking, nor is the tool actually silent. There is no such thing as a silent training whistle; that defeats the purpose of its use. It clearly explains that this whistle is extremely high-pitched (with the option to adjust the frequency) and can be *almost* inaudible to human ears. In other words, it's not startlingly loud and irritating to us, but you can still hear it. For those of who who expect the Acme Silent Dog Whistle #535 to miraculously work immediately, you need to understand that nothing you do will have instantaneous results. This whistle is a TRAINING tool, not a quick fix. Every dog needs to actually be trained to respond to stimulus (in this case, the whistle) in order to expect results. If you want your (or even your neighbor's) dog to stop barking, you need to take the time to condition and train the animal! Granted, there are a *few* dogs that will respond immediately to the whistle, you just cannot expect that since it's not the usual reaction. Please keep in mind that the Acme Silent Dog Whistle #535 was originally designed for sport or working dogs. It is most commonly employed with field training dogs because this particular whistle is fantastic for long distances, it is much less irritating to the average human ear, and it is easily heard by the animal. In dogs, it is primarily used to give commands. In trained cetaceans (whales and dolphins) it is used as a bridge, which is a signal to the animal that it has completed the requested behavior correctly and will soon be rewarded accordingly. All that being said, the Acme Silent Dog Whistle #535 is an incredible training tool that is extremely reliable and useful, providing you know how to use it! As mentioned previously, it is excellent for long distance use and it is not loud or annoying to onlookers/neighbors, while still remaining dependably audible to the dog. It's stainless steel design is very durable and will last you a long time, as long as you don't misplace it (believe me, that happens a lot when trainers use a whistle for regular training and exercise sessions). This is, in my opinion, truly the very best training whistle that money can buy. I highly recommend the Acme 535 to anyone and everyone who utilizes whistles in their animal training! ## Features - Adjustable Frequency 5400-12800Hz. Protective end cap. Designed with special air directors to tightly control the frequency produced and generates over a mile of sound with minimal effort. - Quiet human audible sound to confirm the whistle is working. The whistle is engineered to produce a relatively quiet whistle sound audible in the human range the sole purpose of this is to reassure the user that a sound in the required range is being produced - Includes information leaflet giving easy instructions. - Solid Brass with a Nickel Plated finish. - Genuine ACME Whistle made in the UK by specialists with over 150 years of experience. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 3.7 out of 5 stars 4,548 Reviews | ## Images ![535 Acme -'silent dog whistle' - Image 1](https://m.media-amazon.com/images/I/61AvW5qADFL.jpg) ![535 Acme -'silent dog whistle' - Image 2](https://m.media-amazon.com/images/I/51pS+2vGF9L.jpg) ![535 Acme -'silent dog whistle' - Image 3](https://m.media-amazon.com/images/I/51kP-Ro4T-L.jpg) ![535 Acme -'silent dog whistle' - Image 4](https://m.media-amazon.com/images/I/61rmEgedJxL.jpg) ![535 Acme -'silent dog whistle' - Image 5](https://m.media-amazon.com/images/I/41HGrc+ZThL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The best training whistle on the market that I know of. *by K***G on October 30, 2025* I bought this exact whistle years ago for military K9 training and it was amazing. Recently I thought about having a strong recall for my cat and thought there is no reason this would not work great with my Cat. Disclaimer: My cat has a very high food drive. First time I blew the whistle the cat sought it out through sheer curiosity alone and he was rewarded. I repeated several times & and he learned that the whistle meant reward. I started using it for calling him to meal times and small to medium rewards in different locations of the house and at various times. He had to work to find me increasing the drive. I then paired the whistle to his name. We are doing very well with his training and still on a 1 to 1 schedule. We are going to start using his name more and the whistle less and put him on a variable reward schedule soon. The whistle will eventually be used on occasion to keep up the training but it will also be relegated to an emergency type recall for the cat (for example he gets out of the house and I absolutely need to recall him to get him back). This is a great whistle and a great tool for a training an animal that has a medium to high drive. If your animal (cat or dog) is low drive you might not get similar results but please do not make the mistake of blaming this amazing whistle. I am going to be purchasing my second whistle for my wife’s use today. I hope this helps someone make an informed decision. ### ⭐⭐⭐⭐⭐ Best Training Whistle on the Market! It is NOT a Miraculous Fix! *by D***S on September 10, 2014* I'm really not sure what all of the consumers who rated this whistle poorly were expecting, but they obviously weren't expecting anything realistic. This Acme Whistle #535 is a top-of-the-line training tool used most commonly with dogs, but is also the same bridge whistle used in training many marine mammals (such as dolphins and orca/killer whales) in several facilities all over the world. There is no such thing as a miracle product. With that said, there is nothing in the product description that claims that this is either a whistle to "annoy" a dog, a whistle make a dog stop barking, nor is the tool actually silent. There is no such thing as a silent training whistle; that defeats the purpose of its use. It clearly explains that this whistle is extremely high-pitched (with the option to adjust the frequency) and can be *almost* inaudible to human ears. In other words, it's not startlingly loud and irritating to us, but you can still hear it. For those of who who expect the Acme Silent Dog Whistle #535 to miraculously work immediately, you need to understand that nothing you do will have instantaneous results. This whistle is a TRAINING tool, not a quick fix. Every dog needs to actually be trained to respond to stimulus (in this case, the whistle) in order to expect results. If you want your (or even your neighbor's) dog to stop barking, you need to take the time to condition and train the animal! Granted, there are a *few* dogs that will respond immediately to the whistle, you just cannot expect that since it's not the usual reaction. Please keep in mind that the Acme Silent Dog Whistle #535 was originally designed for sport or working dogs. It is most commonly employed with field training dogs because this particular whistle is fantastic for long distances, it is much less irritating to the average human ear, and it is easily heard by the animal. In dogs, it is primarily used to give commands. In trained cetaceans (whales and dolphins) it is used as a bridge, which is a signal to the animal that it has completed the requested behavior correctly and will soon be rewarded accordingly. All that being said, the Acme Silent Dog Whistle #535 is an incredible training tool that is extremely reliable and useful, providing you know how to use it! As mentioned previously, it is excellent for long distance use and it is not loud or annoying to onlookers/neighbors, while still remaining dependably audible to the dog. It's stainless steel design is very durable and will last you a long time, as long as you don't misplace it (believe me, that happens a lot when trainers use a whistle for regular training and exercise sessions). This is, in my opinion, truly the very best training whistle that money can buy. I highly recommend the Acme 535 to anyone and everyone who utilizes whistles in their animal training! ### ⭐ Not audible up to the advertised two miles. *by T***R on December 23, 2024* i have an OLD Acme dog whistle that i've had since about 1985. It has been wonderful and still works great. I bought this "updated" version on the stated information that the new version is good up to two miles. IT IS NOT AUDIBLE UP TO TWO MILES AS ADVERTISED. I bought one but returned it because the sound was intermittent. I returned it and requested a replacement, thinking the first one may have been flawed. NOT SO. The replacement is also intermittent and dogs do not respond any further than 1/8 of a mile. I tested it with my sons two dogs. We had the dogs at 1/2 mile, clear line of sight. No response. Same thing at 1/4 mile. No response. Finally, at less than 1/8 mile they barely responded. If you need the distance, I cannot recommend this product. My dogs have responded to the old whistle up to 1/2 mile or more. My current dog who is well trained and responsive to the whistle also does not even perk her ears when she is a mile out. For short distances, this updated whistle may be fine. If you are looking for a long distance whistle as I was, this is not it. Acme used to make great whistles, this updated version is a huge disappointment for the price. Good luck. ## Frequently Bought Together - ACME original 'silent' dog training whistle no. 535. Adjustable frequency. Instruction leaflet included. Made in the UK. Good sound quality. Weather-proof. Solid brass with nickel plated finish - Loudest Brass Whistle Best Premium Emergency Whistle 125db+ One Piece Outdoor Survival Whistle On Key-Chain or Hang Around Your Neck and Carry it Anywhere! - Premium Brass Whistles 125 decimals Set of 2 - Includes 2 Black Lanyard 30 Inches - Loud Survival Whistles - Solid Brass --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/262238-535-acme-silent-dog-whistle](https://www.desertcart.co.uk/products/262238-535-acme-silent-dog-whistle) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-19*