| Brand | SMART SENSOR | 
| Color | Black + Blue | 
| Gas Type | Oxygen meter | 
| Measuring range | 0~25% VOL | 
| Resolution | 0.1% | 
| Basic error: | Less than ± 0.1% | 
| Response time: | Less than 50 seconds | 
| Recovery time: | Less than 50 seconds | 
| Measuring Principle | Electrochemical principle, life for 2 years | 
| Low / High Alarm / Alarm Setting | V | 
| Alarm | Acoustic, optical double alarm, can set the alarm value, an alarm | 
| Operating Temperature: | -10~ 50℃(except LEL is 0 ~40℃) | 
| Operating Humidity : | 15~95 % RH, typical | 
| Storage Temperature : | 0~40℃ | 
| Product Weight / Size: | 200g / 112 * 66 * 32 ( mm ) | 
| Power Supply | Rechargeable lithium-ion battery, 3.7 Volts (include) | 
| Battery working runtime: | about 100 hours of continuous use ( when backlight is off) | 
| Packing | Gift Box | 
| Packing Contents | 1pc AR8100 Oxygen gas monitor | 
| The effect of oxygen-deficient and oxygen-enriched atmospheres | |
| The concentration of oxygen(%) | Symptoms (atmospheric pressure) | 
| 100% | Deadly, 6 minutes(Absolutely airtight environment, such as hyperbaric oxygen chamber | 
| 50% | Deadly, can be cured after 45 minutes treatment. (Absolutely airtight environment, such as hyperbaric oxygen chamber) | 
| >23.5% | Rich oxygen | 
| 20.96% | Normal | 
| 19.5% | Minimum | 
| 15~19% | Reduce efficiency, and lead to problems of head, lung and circulation system | 
| 10~12% | Shortness of breath, loss of judgment, purple lips | 
| 8~10% | governance loss, syncope, unconscious, pale, nausea and vomiting | 
| 6~8% | 8 minutes, blood pressure, weak heartbeat,mouth breathing, quickly stopped breathing | 
| 4~6% | 40 seconds, convulsions, respiratory arrest, death | 












AT8100:





