DUO PASS ALARM
International Safety Instruments: Air-activated when SCBA is turned on. Can also be removed and used as a stand-alone alarm. Solid-state accelerometer motion detector. Sweep-type sound, 2 kHz through 3 kHz, 98 dB at 10 feet. High-intensity wig-wag flash beacon. Waterproof case. (800) 235-7677.