Features: _x000D_ 1. Good product stability, high measurement accuracy and strong anti-interference ability._x000D_ 2. The appearance is standard size and easy to install._x000D_ 3. The power supply uses polarity protection lines._x000D_ 4. LED digital display, the reading is more convenient._x000D_ 5. It is the perfect instrument for testing current._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Condition:100% Brand New _x000D_ Material: Plastic _x000D_ Color: Blue _x000D_ 100A full scale: plus or minus 100.00, resolution, 0.01A _x000D_ Working voltage: +5V5% _x000D_ Working current: 1M _x000D_ Measurement rate: 2 / S _x000D_ Decimal point position selectable _x000D_ Can be calibrated by potentiometer _x000D_ SMT process _x000D_ Overrange display: display "H" _x000D_ Extreme working conditions: _x000D_ Working voltage: +5V5% _x000D_ Working temperature: -10 ~ +50 C _x000D_ Working humidity: 10~80% (no condensation) _x000D_ Working pressure: 80 ~ 106kPa _x000D_ Sunlight: No direct illumination_x000D_ _x000D_ _x000D_ _x000D_ Package List: _x000D_ 1*Host_x000D_ 1*Test Cable _x000D_ _x000D_ _x000D_ Note: _x000D_ This header does not include a shunt. If you need to add the range of the shunt, please take another shunt._x000D_ For customers with shunts, please note your shunt specifications (75mV as standard)._x000D_ This meter adopts the common ground design, that is, the "IN-" of the test end is connected to the "negative pole" of the power supply end, so the ammeter can only be stringed between the load negative and the negative power supply. It is recommended to use separate power supply._x000D_ Four and a half, that is, the last four digits are all numbers, 0~9, the first digit can only be 1 or -1, so and so on, such as 20A: 19.999, 50A: 50.00, 100A: 100.00, 200A: 199.99...... ......_x000D_ Tables above 10A must be added with a shunt to work._x000D_ If you buy 20A, or 50A/100A, even if you test 0.1A, you must add a shunt to work.