* * Imported high performance sensor, accurate and stable with long service life;
* Built-in high performance micro-sampling air pump, flow rate stable;
* 5 Navigation button, user-friendly interface and easy to operate and maintenance;
* 2.4″ clour LCD with English/Chinese display interface and human voice prompts support switching between Chinese and English;
* Built-in 3000mAh large capacity lithium battery, support continuous working time up to 20 hours (electrochemical sensors);
* mini USB charger interface (a charger with USA, Europe or UK plug is optional);
* %LEL, PPM units can be selected;
* Sound-Light-Vibration three-mode alarms with human voice prompts and alarm point is user resettable;
* With self-calibration and zero calibration functions, makes the measurement more accurate and reliable;
* High-strength engineering plastic housing, IP65 protection degree with waterproof, dustproof and explosion-proof.