Complete setup for efficient testing with all essential components, available in Type 1 (excluding battery) and Type 2 (including battery). Userfriendly display to speed work, showing clear readings in any lighting: a 4digit definition digital tube with brightness levels from 1 to 8. Flexible power options to fit different environments: external DC5V power, builtin lithium battery (Type 2), and compatibility with DC 15 30V sources for versatility. Easy parameter saving to streamline workflows: save voltage and current values with a single encoder click, eliminating the need to reconfigure after restart. Use scenarios Electronics development and bench testing: quickly generate and adjust precise voltage and current signals to validate circuits during design iterations. Onsite field service and debugging: Type 2 models provide portable operation with battery power, while external DC5V or DC 15 30V options support varied job sites. Device calibration and repeatable testing: save target voltage/current settings once and reuse them to ensure consistent results across sessions.