Combo Voltimetro-Amperímetro Digital de 100A 300V de DC para tu taller, juguete, auto, laboratorio, etc. En fin,. ....SOLO mide DC, no te mide AC. Ya incluye resistencia SHUNT. Puedes alimentarlo con mini-USB (5V) o con fuente externa entre 4 y 30V DC Se puede autoalimentar si el voltaje a medir se encuentra en el rango 4-30V pero si supera ese voltaje puede quemarse. Note: If measuring below 7.8V needs an external voltage of 4-30V. If the voltage exceeds 30V, the product will be burnt out. Although the DC voltage meter has reverse connection or short-circuit protection, but there is no protection in the independent power supply , it is directly power supply to the device, if connect high-voltage will burn motherboard and display will not show.Tambien te mide capacidad de carga en mAHTe mide temperatura con sensor incluido de 0 a 99CTe mide potencia en whatts Incluye alarma para sobre voltaje y sobre corrienteIncluye carcasa de plastico.Etc etc (Leer Product Parameters para mayor infoemacion)Feature: Can test voltage range 0-300V, current range 0-100A, test power even up to 30,000W, high voltage rechargeable batteries, or low voltage 18650 battery.Support current, voltage, capacity accumulation, power accumulation, power, impedance, temperature, time eight data screen display. Product parameters: Input Interface / Output Interface: 100A large current copper nose clip lineVoltage measurement range: 0.00V ~ 300V Resolution Accuracy: 0.05VCurrent measurement range: 0.00A ~ 100A Resolution Accuracy: 0.05AAccumulated capacity range: 0 ~ 999.999Ah Resolution accuracy: 0.01AhCumulative power range: 0 ~ 9999.99Wh Resolution accuracy: 0.01WhPower measurement range: 000.00 ~ 9999.99 W Resolution accuracy: 0.01WImpedance measurement range: 1 ~ 99.9 European resolution accuracy: 0.01 EuropeTemperature measurement range: 0 ~ 99 degrees Celsius 0 ~ 99 ¿ Resolution accuracy: 1 degree CelsiusTime maximum time: 999 hours 59 minutes and 59 seconds Resolution accuracy: 1 secondTimer measurement reminder settings: countdown 24 hours any settingSmall current standby threshold reminder parameters: <2W / 0.5 hoursSmall voltage measurement Power requirements: When measuring <7.8V, please supply the measuring system with DC voltage from 4 ~ 30V to the independent power supply interface supplierRefresh time:> 500mS / time> 500mS / timesMeasurement rate: about 0.5 times / secondOver-voltage and over-current settings Alarm mode: siren sound + display double warningOver-voltage reminder setting range: 1 ~ 300VLow pressure reminder setting range: 0 ~ 290VOvercurrent reminder setting range: 0.2 ~ 150AAlarm Interface Output voltage / impedance: 3.0V / 2200 EuropeDisplay Type: Micropower LCD Module LCM black fonts green backlight Chinese and English displayProduct Size: 105mm * 81mm * 18mm