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Guard-722 Oxygen Detector, Portable O2 Monitor, 0-30%, Rechargeable 120H Battery Duration, Sound, Light and Vibration Alarms, Dust and Explosion Proof, Handheld O2 Meter for Work, Home -<br>Blue<br>Operating Humidity&lt;95% RH<br>Sensor TypeElectrochemical<br>Quick Detection, Triple Alarm: Guard-722 O2 monitor is designed to measure oxygen levels in natural and industrial environments. When oxygen concentration reaches a preset level, the device triggers alarms (LED light, vibration, and sound). Default alarm threshold: 19.5%-23.5%. Guard-722 also features automatic alarm data logging for tracking and safety management<br>Rechargeable Design, 120H Battery Life: Guard-722 Oxygen Detector is rechargeable and runs for up to 5 days on a single charge. It also includes a real-time battery indicator and low battery alert, ensuring continuous O2 monitoring. Password protection prevents accidental operation, with an initial password of "11"<br>Portable Design, Safe and Explosion-Proof: Made from high-strength ABS
| Category | Other > Daily & travel items > Personal care |
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