ACME Alpha 211.5 Dog Training Whistle, Black and Day Glow Orange, 5400Hz Long-Range

The ACME Alpha 211.5 is a professional dog training whistle designed to carry a consistent recall cue, with a standardized 5400Hz frequency and a sound output of 110 dBA.

• Approximately 450–500 yards (411–457 m) of range — supports cueing dogs at a distance.
• Standardized 5400Hz frequency — gives dogs a consistent whistle cue, whoever is blowing it.
• Patented sound chambers developed with World Champion dog trainers over four years — use air more efficiently to create a brighter sound.
• BPA-free plastic made to food-grade standards, with an ergonomic grip — provides a mouth feel and handling designed for use in different conditions.
• Weatherproof construction — makes the whistle suited to outdoor training conditions.
• Made and rigorously tested in the UK by ACME specialists with over 150 years of experience — brings the maker’s established whistle expertise to a dog-training tool.

This whistle is made for handlers who need a recognizable training signal for close work as well as distance. Its extended reach compared with the ACME 210.5 makes it a fit for larger breeds and open training settings, while its standardized frequency is intended to keep the cue recognizable when different people take turns blowing the whistle.

Which dogs and training distances is the ACME Alpha 211.5 designed for?

The ACME Alpha 211.5 is preferred for Labrador, Retriever, Collie, Greyhound and other larger breeds, with an approximate range of 450–500 yards (411–457 m). It reaches farther than the ACME 210.5, making it suitable for training cues both nearby and over distance. The brighter sound from the patented chambers is designed to support clearer commands and a more responsive dog.

• Intended for professional dog training.
• Designed for close-range and distance cues.

How does this whistle provide a consistent cue?

The ACME Alpha 211.5 maintains a standardized frequency of 5400Hz so a dog can recognize the same whistle call across different handlers. A family member, dog walker or training partner can use a different-coloured whistle while keeping that frequency consistent. The patented sound chambers use air more efficiently, producing a brighter sound for commands.

• Black whistle with a Day Glow Orange finish.
• Suitable for use by multiple people giving the same whistle cue.

What is the ACME Alpha 211.5 made from, and how is it shaped?

The ACME Alpha 211.5 is made from BPA-free plastic to food-grade standards and has an all-over ergonomic grip. The updated grip is designed to feel soft in the mouth and support handling in all conditions. Its weatherproof design suits outdoor use, and the black-on-Day-Glow-Orange colour combination makes this version distinct from other colour choices.

• Pealess design: no ball and no cork.
• Compact dimensions: 3 inches (7.8 cm) long, 0.5 inches (1.3 cm) wide and 0.5 inches (1.3 cm) high.
• Weight: 0.013 lb (6 g).

What development and quality details distinguish this whistle?

The ACME Alpha 211.5 was developed over four years in collaboration with World Champion dog trainers. It is a genuine ACME whistle, made and rigorously tested in the UK by specialists whose experience spans over 150 years. These details connect the whistle’s patented chamber design and standardized sound to its intended role as a dependable training cue.

• Designed in collaboration with experienced competition trainers.
• Made in the United Kingdom.
• Rigorously tested by ACME whistle specialists.

The ACME Alpha 211.5 is suited to handlers of Labradors, Retrievers, Collies, Greyhounds and other larger breeds who want a weatherproof whistle for training at close range or across distance. Its compact, lightweight body, ergonomic grip and standardized-frequency sound make it a practical choice for handlers sharing the same dog-training cue.