electronic measuring devices, namely, data loggers which measure, monitor or record activity in the physical environment, namley, temperature, pressure, humidity, rainfall, radiation, velocity, direction, flow, depth, moisture, water quality, air quality, sound levels, voltage, current or frequency

'activ':12 'air':30 'current':35 'data':5 'depth':26 'devic':3 'direct':24 'electron':1 'environ':16 'flow':25 'frequenc':37 'humid':20 'level':33 'logger':6 'measur':2,8 'moistur':27 'monitor':9 'name':4 'namley':17 'physic':15 'pressur':19 'qualiti':29,31 'radiat':22 'rainfal':21 'record':11 'sound':32 'temperatur':18 'veloc':23 'voltag':34 'water':28

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