Guard-722 Oxygen Detector

The Guard-722 O2 monitor measures oxygen levels and triggers alarms when concentrations fall outside a preset range. It is rechargeable, waterproof, and designed for portable use in various environments.

• The description claims the device triggers alarms when oxygen concentration reaches a preset level.
• The description claims the device is waterproof and made from high-strength ABS plastic.
• The description claims the device undergoes strict safety tests and holds valid certifications.