Features: Adopt of amorphous alloy core, with high performance, low loss Various current test range, 4A, 40A, 200A, 200-400A test range are available Band wide up to 200KHz, low battery indication Auto zero at power on, relative zero correction Low noise level, and high detection accuracy Specification: Model CP-05+ Test Range 1mA - 400A Bandwidth DC - 200KHz (3dB) Jaw Size 23mm (max) Auto Zero at Power-on yesPower Supply 9V 6F22 Battery(not included) Operating Temperature 0 to 50 Operating Humidity 15% to 70% RH DC Current Range AC 4A AC 40A AC 200A AC 200A - 400A Accuracy 2.0%rdg 5-digit 3.0%rdg 5-digit Sensitivity 1mV/10mA 1mV/0.1A 1mV/1A AC Current Range DC 4A DC 40A DC 200A DC 200 - 400A Accuracy 1.5%rdg 5-digit 3.0%rdg 5-digit Sensitivity 1mV/10mA 1mV/0.1A 1mV/1A Dimension 18.5*6.8*2.5cm/7.3*2.7*1inWeight 272g/9.6oz Package list: 1 x AC/DC Clamp Current Probe(battery not included) 1 x Pouch 1 x User Manual.