Digital LCD Dual Mode Smart Multimeter Voltage Detector Resistance Frequency Tester Condition: Item Type: Smart Multimeter Material: ABS Color: As shown in the picture Size: Approx.150x40x17mm/5.9x1.6x0.7in Weight: Approx.117g/4.1oz The Maximum Voltage Allowed At the Measuring Terminal: DC: 400V or AC: 400V (limited value) Working Height: Maximum 2000m Display: LCD Maximum Display Value: 2000 digits Sampling Rate: About 3 times / second Unit Display: with function, power unit display Automatic Shutdown Time: About 2 minutes Working Power Supply: 1x1.5V AAA (Not included) Temperature Coefficient: Less than 0.1 X accuracy / ℃ Working Temperature and Humidity: 0-40 ℃ (not considered when <80% RH, <10 ℃) Storage Temperature and Humidity: -10 ℃ -60 ℃ (<70% RH, remove the battery) DC Voltage Range Resolution Accuracy 400V 0.01V ±(0.8%reading+3words) Sensitivity: minimum 0.5v dc voltage Input impedance: 1 m Ω Maximum input voltage: 400V DC or AC effective value AC Voltage 400V 0.01V ±(1.2%reading+3words) Sensitivity: minimum 1V ac voltage Input impedance: 1 m Ω Frequency range: 50hz-60hz, true RMS response Resistance 10MΩ 1Ω ±(1.2%reading+3words) Frequency 1000HZ 0.1HZ ±(2%reading+3words) Frequency measurement range: 40hz-1000hz AC 1V valid value above Voltage detection alarm Range Description Low gear Display 1/3 analog bar, the alarm sound of the buzzer and the green voltage indicator light Mid gear Display 2/3 analog bar, the alarm sound of the buzzer and the yellow voltage indicator light High gear Display full screen analog bar, the buzzer gives out higher frequency alarm sound, and the red voltage indicator light is on