Features： 1、The DC current sensor is suitable for on line detection of DC leakage current. Using CT magnetic induction technology, portable, with clamp shaped design. 2、The product is made of ABS and permalloy material, which ensures high accuracy, high stability and high reliability for year round uninterrupted measurement. 3、With clamp shaped structure, no need to cut off the power, no need to disconnect the line under test, easy to carry, especially suitable for online testing, non contact measurement, easy to operate, fast, safe and reliable. 4、DC current sensor can be connected to industrial control devices, line fault testers, data loggers, oscilloscopes, harmonic analyzers, power quality analyzers, high accuracy digital multimeters, etc. 5、Using magnetic shielding technology, stable performance, high accuracy, and strong anti interference ability. Widely used in electric power, construction, mining and other fields. Specification： Item Type: Clamp DC Leakage Current Sensor Model: ETCR030D Material: ABS+permalloy Application: Suitable for electric power, communications, meteorology, railways, oil fields, construction, measurement, scientific research and teaching units, industrial and mining enterprises and other fields. Transformer range, output signal, output interface, etc. Range and Accuracy: Range Resolution Accuracy Class 0.1mA~100mA DC 0.1mA 3 Other Parameter: Power Supply 9V CT Size Approx. 25 x 30 mm / 1 x 1.2 in Range 0.1mA~100mA DC Output Signal 25mV/1mA Resolution 1mA DC Accuracy Level 3.0 Output Interface 2 core shielded wire is 2m long, red wire: power output is positive; yellow wire: output signal is positive; shielded wire: power output is negative/signal output is negative Security Level CATⅢ600V Operating Temperature -15°C~50°C Dielectric Strength AC 3700V/rms (between iron core and shell) Clamp Meter Quality Approx. 180g / 6.3oz External Size Approx. 115 x 70 x 33 mm / 4.5 x 2.8 x 1.3 in Package List： 1 x Clamp DC Leakage Current Sensor 1 x Manual