Pay attention to: Product does not contain batteries for sale. Overview: The instrument is a hand-held intelligent multifunctional measurement instrument, integrating noise, illuminance, humidity, temperature and digital multimeter into one. With large LCD digital display (three sets of data display) and backlight, it's easy for user to read, with overload protection and battery undervoltage indication. Whether for professionals, factories, schools, amateurs or family, it's an ideal multi-functional instrument. Accuracy Specifications: DC Voltage: 400mV/4V/40V/400V/1000V ±(0.7% reading+2) AC Voltage: 400mV/4V/40V/400V ±(0.8% reading+3) 750V±(1.0% reading +3) DC Current: 400uA/4000uA/40mA/400mA±(1.2% reading +3) 4A/10A ±(2.0% reading +10) AC Current: 400uA/4000uA/40mA/400mA ±(1.5% reading +5) 4A/10A ±(3.0% reading +10) Resistance: 400Ω/4kΩ/40kΩ/400kΩ/4MΩ ±(1.2% reading+2) 40MΩ ±(2.0% reading+5) Connectivity Test: The resistance of the measured circuit is less than 50. The buzzer contained in the instrument will sound Capacitance: 40nF/400nF/4uF/40uF/100uF ±(3.0% reading+3) Frequency and Duty: 9.999Hz/99.99Hz/999.9Hz/9.999kHz/99.99kHz/199.9kHz ±(1.5% reading+5) >200kHz Just for reference 0.1~99.9% ±3.0% Diode Test It displays the approximate forward voltage value of the diode Noise（dB) 40-100dB ±3.5%dB Illuminance（Lux Lux (4000)/×10Lux(40000) ±(5.0% reading+10） Calibrated under standard incandescent lamp with color temperature 2856k. Humidity（RH, shown in humidity display area） 20 - 95% ±5.0%RH
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