Dive Alert Plus uses a small amount of air from your scuba tank to make a piercingly loud sound in air or water. People have been able to hear a Dive Alert Plusone mile away from a diver in need above water. In conditions where visibility is limited, a Dive Alert Pluscan be a life saver. Underwater you can sound for attention quickly with a squeeze of the device.
HOW IT WORKS
The uses chrome-plated brass couplings to attach to your power inflator. Squeezing the device engages the actuator valve stem causing a small amount of air to flutter a stainless steel diaphragm, emitting a piercingly loud sound from the injection-molded thermoplastic body. The subsurface / underwater signal is produced by a percussion "buzzing" noise made by a piston hitting a stainless steel diaphragm much like a drum.
DiveAlertPLUS does not require any modification to your equipment, and it does not interfere with the normal operation of your equipment.
Once the tank is turned on and the DiveAlertPLUS connected, squeeze the DiveAlertPLUS softly underwater for a subsurface signal.