Hãng sản xuất: HANNA - ÝRange 0 to 500 PCUResolution 5 PCUAccuracy @ 25°C ±5% of reading ±10 PCULight Source LED @ 470 nmLight Detector silicon photocellEnvironment 0 to 50°C (32 to 122°F); RH max 95% non-condensingBattery Type (1) 1.5V AAAAuto-off ...