Features: Lightweight and portable, easy to use in different working environments, without external power supply, suitable for field operation. This device features a digital LCD display, and multiple output modes including linear and step, ensuring clear readings and adaptability in dynamic testing environments. For engineers, technicians, and laboratory scientists who require precise signal sources for equipment calibration, maintenance, or research and development processes. Perfect for automation industry professional during equipment debugging, field calibration of instruments, and scientific experiments, providing reliable voltage and current signals for accurate performances verification. With its quick response time and high accuracy, this process calibrator enhances measurement precise, making it a essential tool for any professional seeking efficiency and reliability in their work. Specifications: Component:Plastic Size: Approx.6x2.5x10cm/2.36x0.98x3.9inch Power supply mode: external power supply DC15‐30V, external microrousb‐5V. Voltage output: 0-10V adjustable, calibrated accuracy 0.01V, maximumly current 20mA. Current output: adjustable from 0 to 22mA, with calibrated accuracy of 0.01mA and load equivalent resistance ≤500 ohms. Power consumption parameters: external power supply DC15-30V, power 1W (not charged) /5W (charged), external microrousb‐5V, current 0.2A (not charged) /1A (charged). Display element: 4-digit 0.4-inch digital tube Package Includes: 1 Set Handheld Current Signal Generator note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.