Two variants available: Type 1 (excluding battery) and Type 2 (including battery). - Complete voltage and current signal generator for efficient testing with essential components included in the kit. - 4-digit high-definition display with adjustable brightness levels (1-8) for clear visibility in different lighting conditions. - Flexible power options: external DC5V input, built-in lithium battery (Type 2), and compatibility with DC 15-30V sources for use in various environments. - Easy parameter saving: save voltage and current values with a single click of the encoder, so settings remain after restart without reconfiguration. - Practical use scenarios: - Calibrating measurement instruments such as multimeters and power supplies in the lab. - Testing and powering microcontrollers or embedded devices during development. - Portable field testing and on-site hardware validation using battery or external power.