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مكنة قياس حرارة+رطوبة
$25.53Ambient temperature:-20℃~60℃(-4℉~140℉) Ambient humidity:0~99%RH Web bulb temperature:-20℃~60℃(-4℉~140℉) Dew point temperature: -50~60℃ (-58℉~140℉) Automatic shutdown without operation for 30 minutes, Backlight function MAX/MIN function Battery: 2x1.5V… -
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مكنة قياس صوت ديسيبال
$38.30Measuring range:30-130dB Dynamic range:50dB Sound pressure accuracy:±1.5dB(94dB@1KHz) ,±1.5dB(94dB@8KHz) Frequency response:30Hz-8KHz Microphone:Polarized capacitance microphone With backlight function With lower battery indication function Packed by color box -
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Digital Anemometer مكنة قياس شدة الهواء ديجيتال
$43.85Range of Air speed0.80-40.00m/s Resolution 0.01 ±(2.0%+30) Data hold With backlight function With lower battery indication function Packed by color box