Guard-756 Upgraded Oxygen Detector

The Guard-756 oxygen monitor uses a DDS sensor to quickly trigger alarms within 0.5 seconds when oxygen levels drop, with a detection range of 0-30% VOL. It has a 7-day runtime, 4-hour quick charge, and triple alarms including LED, vibration, and sound.

• The description claims the sensor triggers an alarm within 0.5 seconds when oxygen levels reach the preset threshold.
• The description claims the sensor minimizes the chance of airflow blockage by the hand.