Specifications: Digital LCD screen gives clear crisp number readings. Handles up to 100 amps intermittently and 50 amps continuous duty. Connecting load end to the battery provides real-time battery charging reading. Handles 0 to 60 volts. Works on 12, 24, 36, and 48 volt battery bank systems. Extremely low power consumption of 7mA. More efficient than any LED meter. Measure energy(wh),charge(ah), power(w),current(A) and voltage(V). Accurate & precise 0.01 A current and 0.01 V voltage resolutions. Measures peak Amps, peak Watts(except for Doc Wattson) and Voltage minimum(sag). Rugged- handles 50A continuous and 100 A peak at 60V. Acts like a wire so doesn't affect model's performance. Precision Alu-Chrom current sensing resistor, with only 0.001 Ohms resistance and circuitry that draws only 7 mA. USes DSP to increase ADC resolution and differential measurement amplifiers to increase noise immunity. Item Name: RC Watt Meter Material: Metal + ABS Voltage: 0V-4V-60V 0.01V (Resolution) Current: 0-100 A Peak 0.01A (Resolution) Power: 0-6554 W 0.1W (Resolution) Charge: 0-65 Ah 0.001Ah (Resolution) Energy: 0-6554wh 0.1Wh (Resolution) Measurement Update Period: 400mS Signal Sampling Rate: Sample/s Data Queue Sequence Time: 2 seconds In Circuit Resistance: 0.001Ohms Operation Current: 7mA Features: LCD Screen, High Accuracy, Watt Tester, Durable Length: 3.27inch; (Approx.) Width: 1.85inch; (Approx.) Thickness: 0.79inch; (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x RC Watt Meter