Digital Voltage Signal Generator with advanced 420mA/010V transmitter and a definition 4digit display. The brightness is adjustable across 1 to 8 levels for visibility in varying lighting conditions, enabling electrical engineers and technicians to perform accurate signal testing with confidence. Power options provide flexibility for any environment: External DC 1530V output (compatible with PLC power sharing) USB 5V connection to power banks or computers Builtin rechargeable lithium battery (Type 1 model) This combination ensures uninterrupted operation whether you are in the workshop, on a panel, or in the field. Professional field testing tool packaging: Compact aluminumknobbed device Dimensions: 89 x 69 x 28 mm Specifically designed for electrical maintenance professionals who require reliable onsite calibration and troubleshooting, making complex electrical system diagnostics more efficient and accurate Memory function for efficiency: Intelligent parameter storage lets you save preferred voltage and current values with a single encoder click Settings persist after restart, eliminating repetitive adjustments and streamlining your workflow during frequent testing procedures Use scenarios: Onsite calibration of field instruments on a manufacturing line. Use the 420 mA and 010 V outputs to test loops and sensors, adjust display brightness for ambient light, and recall common presets quickly. PLC panel commissioning and troubleshooting. Power from external DC 1530 V or via USB to a laptop or power bank, and store calibration presets for repeatable test sequences. Remote or batterypowered maintenance. Rely on the builtin lithium battery (Type 1 model) for portable operation and preserve lastused settings with memory retention for rapid repeat testing.