This handheld digital signal generator provides three power supply modes for flexible use in labs, workshops, and field environments. It uses plug-in terminal blocks for quick installation, stable performance, and easy portability. Short-circuit protection on the output and reverse-connection protection on the power supply enhance safety and reliability. A single button switches between voltage and current modes, with independent wiring for simultaneous output. Key benefits - Flexible power options reduce setup time and adapt to different work contexts - Quick wiring with terminal blocks minimizes installation effort and wiring errors - Safety protections guard equipment and operators during testing - Simple one-button operation with independent wiring supports complex test scenarios - Compact handheld form and durable construction enable portable use Attributes and compatibility - Function: voltage and current output with switchable modes - Compatibility: suitable with standard lab instruments and bench gear - Size: compact handheld design for easy transport - Material/build: durable housing designed for regular use - Performance: stable output with protective features for reliable results Use scenarios - Calibrating oscilloscope probes and multimeters in a benchtop lab - On-site maintenance and testing of power supplies and amplifiers - Educational demonstrations and hands-on training in classrooms or workshops