Ideations Dive Alert Plus

The Dive Alert Plus delivers a loud audible signal both on the surface and under water. It's the original integrated inflator air horn. The company claims that it can be heard up to a mile away, and testers have proved them right. The quality of sound is similar to the high pitch of a smoke detector alarm but 100 times louder. Measuring less than three inches square the super-compact Dive Alert Plus ties into your BC's low-pressure hose via quick-connect fittings. It will quickly get a dive boat's attention on the surface, or your dive buddy's attention at depth with just a push of the button. divealert.com