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| Electronic leak detector gas sniffer |
| Model | ST312 |
| Sensor | Semiconductor |
| Refrigerants | R-22, R-134a, R-404a, R-410a and all CFCs, HCFCs, HFCs |
| Sensitivity Levels | High 0.15 oz. / year (4 g/ year) Medium 0.25oz. / year (7 g/ year) Low 0.50oz. / year (14 g/ year)(Compatible with SAE J2791 ) |
| Reset | Automatically reset to background level |
| Selectable Refrigerants | - |
| Display | LED |
| Response Time | Less than 0.5 second |
| Warm Up Time | Approx. 45 seconds |
| Battery Type | DC 3.7 V, 800 mAh rechargeable lithium battery |
| Battery Life | Approx. 2.5 hours continuous use when fully charged |
| Charging Time | 3 hours in all @ 400 mA, 0~45°C(32~113°F) |
| Audio Alarm | Yes (Buzzer) |
| Pump System | Yes |
| Auto Power Off | 10 minutes of idle |
| Low Battery Indicator | Yes |
| LED Tip Light | Yes |
| Flexible Probe Length | 450 mm (17.22") |
| Operating Temperature and %RH | 0~50°C (32~122°F), < 80% RH |
| Storage Temperature and %RH | -10~60°C (14~140°F), < 70% RH |
| Dimensions | 184x70x40 mm(7.24"x2.76"x1.57") |
| Weight | 300 g(10.7 oz.) |
| Accessories | Instruction manual, Carring case, AC adapter, Leak test bottle, Holster |

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