This instrument is a 9999 counter, hand-held digital multimeter with true virtual value and manual/automatic integration. It has a large, double, invert digital LCD display with simulation bars and illumination lights which are easy for users to read. It has the functions of alarm for fuse tube fused, wrong insertion of measurement probe, overload protection and battery undervoltage indication. It is a great multi-function instrument for either professionals, factories, schools, enthusiasts or families. Features: 10000 counts, analog bars and digital dual display, intelligent dual core measurement data processing. Manual range and automatic range design. V.F.C variable frequency voltage measurement function, NCV non-contact measurement voltage, AC voltage and current frequency test, automatic identification diode & on/off. Automatic alarm function of the fuse is disconnected, and multimeter pen wrong insert anti-burn alarm function. 1KHz real effective measurement, 99.9mF large capacitance range. Live single-table pen recognition fire line. Probe -20 ~ 1000 degree temperature measurement. The shell is made of ABS fireproof material and has a hard texture. PVC leather case, anti-fall and wear-resistant. Specifications: Material: ABS Range Gear: Auto range / manual range Display: Reverse display AV screen with analog bars and digital dual display, 10000 counts Operating Environment: 600V CAT IV and 1000V CAT III Ture RMS: 1KHz DC Voltage Range: 999.9mV/9.999V/99.99V/999.9V DC Voltage Resolution: 0.1mV/1mV/10mV/100mV DC Voltage Accuracy: ± (0.5% reading + 3 digits) AC Voltage Range: 999.9mV/9.999V/99.99V/750.0V AC Voltage Resolution: 0.1mV/1mV/10mV/100mV AC Voltage Accuracy: 999.9mV ~ 99.99V: ± (0.8% reading + 3 digits); 750.0V: ± (1% reading + 5 digits) DC Current Range: 99.99A/999.9mA/600mA/10A DC Current Resolution: 0.01A/0.01mA/0.1mA/10mA DC Current Accuracy: 99.99A ~ 600mA: ± (0.8% reading + 3 digits); 10A: ± (1.2% reading + 3 digits) AC Current Range: 99.99mA/600mA/10A AC Current Resolution: 0.01mA/0.1mA/10mA AC Current Accuracy: 99.99mA ~ 600mA: ± (1% reading + 3 digits); 10A: ± (1.5% reading + 3 digits) Frequency Range: 9.999Hz/99.99Hz/999.9Hz/9.999KHz/99.99KHz/999.9KHz/9.999MHz Frequency Resolution: 0.001Hz/0.01Hz/0.1Hz/0.001KHz/0.01KHz/0.1KHz/0.001MHz Frequency Accuracy: ± (1% reading + 3 digits) Resistance Range: 999.9/9.999k/99.99k/999.9k/9.999M/99.99M Resistance Resolution: 0.1/1/10/100/1k/10k Resistance Accuracy: 999.9 ~ 9.999M: ± (0.8% reading + 3 digits); 99.99M: ± (1.2% reading + 5 digits) Capacitance Range: 9.999nF/99.99nF/999.9nF/9.999F/99.99F/999.9F/9.999mF/99.99mF Capacitance Resolution: 0.001nF/0.01nF/0.1nF/1nF/10nF/100nF/1F/10F Capacitance Accuracy: 9.999nF ~9.999mF: ± (4% reading + 3 digits); 99.99mF: ± (5% reading + 3 digits) Diode Range: 0.15 ~ 3V Diode Resolution: 0.001V Buzzer and Continuity Range: 100 Buzzer and Continuity Resolution: 1 Temperature Range: -20~1000°C / -4~1832°F Temperature Resolution: 1°C / 1°F Temperature Accuracy: ± (1% reading + 3 digits) Undervoltage Prompt: Less than 2.4V Working Temperature/Humidity: 0~40°C;