Product Details Voltage Current Power Meter Measuring Range Simultaneous display of voltage and current Voltage Measurement Range DC 0-100V Current Measurement Range 0-10A Power Measurement Range 0-1000W Voltage Error Range ±1%(Adjustable) Current Error Range ±1%(Adjustable) Power Error Range ±1%(Adjustable) Refresh Rate 300ms/Times Display Method HTN LCD 3 Rows of 3 Digits Supply Voltage DC 7-12V Working Current <15mA Working Temperature -10-60 oC