• TWA and STEL readings and alarm • Peak, average, elapsed time readout • RF and weather resistant metal case • 260 hours continuous operation • Intrinsically sate in Japan

• TWA and STEL readings and alarm • Peak, average, elapsed time readout • RF and weather resistant metal case • 260 hours continuous operation • Intrinsically safe in Japan

(With audible/visual alarm) © Carrying strap holder © ON/OFF and select switch Q External alarm jack The latest model OX-91 is a personal and portable instrument for detection of oxygen deficient and oxygen enriched environments. Self contained and intrinsically safe model OX-91 is powered by two standard size AA (R6) batteries. Its small size lets you wear it as you work, clipped to belt for hand-free operation. The gasketed metal case gives the OX-91 strong construction, protection from water, dirt and RF interference. The top mounted crystal display gives continuous readings. In low light,...