1、Function as 3 in 1:: datalogger + multimeter + temperature meter 2、The change trend analysis accessible via special chart mode 3、Voice warning supported, which assures measurement safety 4、Smart voice-reading accessible 5、3999-count full scale reading Features: 1. Function as 3 in 1:: datalogger + multimeter + temperature meter 2. The change trend analysis accessible via special chart mode 3. Voice warning supported, which assures measurement safety 4. Smart voice-reading accessible 5. 3999-count full scale reading 6. Larger display, easier data-reading; simulated bar chart comes as an added option Specification: Condition: 100% Brand New Model: B33+ Measurement Resolution Accuracy DC Voltage V 400.0mV/4.000V/40.00V/400.0V 0.1mV ±(0.5%+2dig) 1000V 1V ±(0.8%+2dig) AC Voltage(V) V 4.000V/40.00V 1mV ±(0.8%+2dig) 400.0V/750V 0.1V ±(1%+3dig) DC Current(A) uA 400uA/4000uA 0.1uA ±(0.8%+2dig) mA 40.00mA/400.0mA 0.01mA ±(0.8%+2dig) A 1.000A/10.00A 0.1mA ±(1.2%+3dig) AC Current(A) uA 400uA/4000uA 0.1uA ±(1%+3dig) mA 40.00mA/400.0mA 0.01mA ±(0.8%+2dig) A 1.000A/10.00A 1mA ±(2%+3dig) Resistance (Ω) 400Ω/4.000kΩ/40.00kΩ/400.0kΩ/4.000MΩ 0.1Ω ±(0.8%+2dig) 40.00MΩ 0.01MΩ ±(2%+3dig) Capacitance (F) 40.00nF/400.0nF/4.000uF/40.00uF 0.01nF ±(2.5%+3dig) 100.0uF 0.1uF ±(3%+5dig) Frequency 4.999Hz/49,99Hz/499.9Hz/4.999kHz/49.99kHz/49.9kHz/ 4.999MHz 1mHz ±(0.8%+2dig) Duty Ratio 0.1%-99.9%（typical value: Vrms=1V, f=1kHz） 0.1% ±(1.2%+3dig) 0.1%-99.9%（≥1kHz） ±(2.5%+3dig) Temperature -50℃ - 400 ℃ Display 3999 Auto-scale Yes Offline Recording Function Yes Auto Power-off Yes Diode Test Yes Audion Test Yes Auto Power-off Yes On-off Warning Yes Low-battery Indicator Yes Data Hold Yes Relative Measurement Yes Max / Min Value Yes Bluetooth Module Yes LCD Backlight Yes Simulated Chart Yes Input Protection Yes LCD Size 69*52mm Battery 3V(2.5V*2)(not included) Weight: Approx. 495g / 17.5oz Size: Approx. 85 * 185 * 30mm / 3.4 * 7.3 * 1.2in Package List: 1 * Digital Multimeter 2 * Test Lead 2 * Clip 1 * Thermocouple