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OXYGEN DEFICIENCY MONITOR PAGE 2
2. Features
2.1 Features of the Model 55 include:
• Temperature Stable
• Barometric Pressure Insensitive
• Large LCD digital display
• High accuracy over temperature range 0-50
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• Fast response -90% full scale in 10 seconds
• Visual Alarm – LED provided on top of case
• External Earphone for noisy environments
• Single ON/OFF sliding switch
• Long Battery Life – 200 hours on a 9V battery
• Low Battery indication – visual display
• Small Size – Comfortable for belt water