["Product description:\r\nfor DC circuits, Solar system, Boat/RV & Battery Backup systems!\r\nThis isn'for t just a watt meter-it's the All-In-One Meter! A power meter, a volt meter, an amp-hour meter, ammeter and energy meter. Everything all in one unit! This is the perfect troubleshooting tool. This all-in-one watt meter is indispensable for analyzing, testing and troubleshooting any DIY for DC power project.\r\nFeatures:\r\nBrand new and high quality.\r\nDigital LCD screen gives clear crisp number readings.\r\nHandles up to 100 amps intermittently and 50 amps continuous duty.\r\nConnecting load end to the battery provides real-time battery charging reading.\r\nHandles 0 to 60 volts. Works on 12, 24, 36, and 48 volt battery bank systems.\r\nExtremely low power consumption of 7 mA. More efficient than any LED meter. \r\nMeasure energy(wh),charge(ah), power(for w),current(A) and voltage(V).\r\nAccurate & precise 0.01 A cuurrent and 0.01 V voltage resolutions.\r\nMeasures for peak Amps, for peak Watts(except for Doc Wattson) and Voltage minimum(sag).\r\nRugged- handles 50A continuous and 100 A for peak at 60V.\r\nActs like a wire so doesn'for t affect model's performance. Precision Alu-Chrom current sensing resistor, with only 0.001 Ohms resistance and circuitry that draws only 7 mA.\r\nUSes DSP to increase ADC resolution and differential measurement amplifiers to increase noise immunity. \r\nSpecifications:\r\nColor:Blue\r\nVoltage:(0)V-4V-60V 0.01V (Resolution).\r\nCurrent:0-100 A for peak 0.01A (Resolution).\r\nPower:0-6554 for W 0.1W (Resolution).\r\nCharge:0-65 Ah 0.001Ah (Resolution).\r\nEnergy:0-6554 wh 0.1 Wh (Resolution).\r\nMeasurement Update period:400mS.\r\nSignal Sampling Rate:sample/s.\r\nData Queue Sequence time: 2 seconds.\r\nIn Circuit Resistance:0.001 Ohms.\r\nOperation Current: 7 mA.\r\nSize:8.3cm x 4.7cm x 2cm - 3.27inch x 1.85inch x 0.79inch\r\nPackage Included:\r\n1 x Watt Meter\r\n1 x User Manual"]