AMPX1 is a source and measurement tool. Is used to 0~24mA / 4~20mA current loop and 0~10V / 0~100mV output, also has 4000 counts integrated multimeter function. 10.02% high accuracy of DC V/A input and output. Double injection molding process provides users a better feel and improve product durability. The application of 24 bits a high-precision AD and low zero drift op-amp. The four levels of gold-plated circuit board. Signals of input and output designed separately, to ensure that the small signal stability. High-class probes, long-term use, will not be damaged easily. General Features Voltage between the measurement end and ground is of 600V AC/DC. 600V CAT IV, 2th pollution grade. Six AAA batteries X 1.5V. Support used AAA NIMH battery Infrared coupling USB interface. Operating temperature: 0~30'C (relative humidity 0~80%) 31~51'C (relative humidity 0~50%); Storage temperature: -20~60'C (relative humidity