The Little Environmental Observatories (LEOs) are portable sensor packs. It measures up to three pollutants including NO2, NO, O3, CO, SO2 or H2S using electrochemical sensors. It also provides the current temperature and relative humidity.
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The LEO nodes can measure up to 9 air pollutants as well as ambient noise level and other environmental parameters.
_ MEASURE
The static nodes are composed of electrochemical (up to 3) sensors to measure (ppb or ug/m3):
NO2
NO
CO
O3
SO2
H2S
Other ambient quality indicators are also measures such as:
Temperature (ºC)
Relative Humidity (%RH)
_ FEATURES
Battery: 3.7V LiPo 900mAh
Integrated intelligent battery charger with battery protection: Overcharge, Overcurrent, Overdischarge
Charging time: 2 to 3 hours @ 700mA (nominal) using normal USB connection (cable provided)
Operating time from fully charged battery up to 60 hours
The smartphone’s battery depends on the model of the phone and use.
Cycle life: 60% capacity after 500 charge/discharge cycles
_ CONNECTIVITY
Bluetooth 4.0
Micro USB (charger only)
_ SIZE & WEIGHT
Height:
81 mm (3.18 inches)
Width:
38.5 mm (1.52 inches)
Depth:
39.4 mm (1.55 inches)
Weight:
104 g
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