Feature:_x000D_ _x000D_ Heat under load: After the temperature rise changes to stabilize, the rated current is less than 80 C below 50A; the rated current is not more than 120 C above 50A. _x000D_ The product can protect the ammeter and assist the ammeter to measure very large currents. _x000D_ It's very simple to use, you don't need to buy an expensive new ammeters to measure larger currents. _x000D_ Will not reduce the measurement accuracy of the ammeter, the precision of the product is: Accuracy level: 2 ~ 4000A, 0.5 level; 5000 ~ 10000A, level 1. _x000D_ Compact size, practical, very good assistant tool for current measurement. _x000D_ _x000D_ Specification:_x000D_ Current: 50A; 100A(Optional)_x000D_ Precision level: 2 ~ 4000A, 0.5 level; 5000 ~ 10000A, level 1._x000D_ Temperature: -40 to +60 C, relative temperature 95% (35 C)._x000D_ Overload performance: rated current 120%, 2 hours_x000D_ Voltage drop: 75mV_x000D_ _x000D_ Package list:_x000D_ 1 * Shunt Resistor_x000D_ _x000D_ Note:_x000D_ The actual product color may deviate from the photo due to light._x000D_ There may be a slight deviation in the measurement of product._x000D_ _x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.