Features

* User configurable for all three size channels

* Set and display date and time.

* Error status indicator: The instrument will automatically monitor the sensor status, out of flow calibration (>+/-5%), or insufficient battery

* Timer, auto-start sampling

* Average of multiple times of measurements

* External digital temperature and humility sensors to assure accurate measurement

* No less than 3 hours of continuous operation.

Specifications:

* Size Range: 0.3, 2.5 micrometer

* Light Source: Laser diode (more than 100,000 hours MTBF)

* Flow Rate: 500ml

* Sampling Time:20 seconds

* Measurement: Concentration (per liter)

* Error Indication: Count limit, loss of laser power, out of flow calibration (>+/-5%), insufficient battery

* Power: Li-ion polymer rechargeable battery (7.4V/1020mAH) or AC adapter (AC input: 100 ~ 240V, DC output: 9V/1.5A)

* Max. Operating time: continue operation >3 hours with Li-ion polymer battery)

* Dimension: 93 (W)x180 (H)x48 (D) mm

* Weight: <600 g (battery included) Environmental Condition: Operating: +5- +45 degreeC, <90%RH; Storage: -20- +50 degreeC, <90%RH