Acoustic alarm Schrill

This device requires caution—if used as a joke, it could damage someone's hearing. It emits a sharp, very loud, and piercing high-frequency sound. Unfortunately, the gas runs out quickly, but I found a way to refill it with lighter gas.

Lightweight, compact deterrent at an affordable price. A small gadget that is especially worth having, especially for women. I bought it for my wife and hope she never has to use it. It's an expense for safety.

Handy, compact, and very loud acoustic deterrent. Perfect for both walks in the forest and in the city for protection against attackers. The product matches the description, I recommend it.

It's very small and handy, produces a really loud sound. Thanks to the compressed air power supply, it's reliable in any condition and can be stored almost anywhere. In my opinion, it performs better than electronic alarms.

Small and lightweight, with a long, three-year shelf life. I take it to the mountains as an addition to bear spray. It takes up minimal space and makes a really big noise.

Great means of protection instead of using gas. It proved effective during trekking in Romania, quickly driving away chasing shepherd dogs. You can use it in dense undergrowth to warn bears of your presence.

Extremely loud, you can't stand being near it when activated. Nice gadget for scaring animals in the forest and can also be effective for self-defense. The downside is the high gas consumption and sometimes the canister separates from the whistle in your pocket.

I tested it in the forest—the sound is very loud, a mix of whistle and squeal. This signal effectively scared off a large dog that was barking and approaching. So it can turn out to be very useful.

The siren is very effective and loud, easily deterring threats and alerting people nearby, who can quickly react and provide help.

Very loud alarm or deterrent, the sound is unpleasant for the ears, it could even wake the dead. Tested in the forest—do not recommend using at home. It's worth having a spare cartridge.

A really loud deterrent, and also easy to use. It already came in handy for me while riding a bike.

You need to be careful when testing – it's incredibly loud. Alarm bought at the new MILITARIA.pl store in Bydgoszcz on Dworcowa St. Very good service, I recommend it.

Exceptionally loud and effective, I recommend it.

Product bought as a gift, everything is fine.

The alarm is very loud.