Digital dust concentration meter for measuring PM2.5 and PM10.
Air quality measuring instrument, HCHO measurement, Ni-MH 750 mAh.
Air quality measuring instrument, HCHO and airborne dust measurement, Li-Ion 1400 mAh.
Ammonia and temperature measuring instrument, LCD, 3.6 VDC Ni-MH battery 1600 mAh.
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