Compact and durable design: Made from sturdy PCB material, this load tester emphasizes durability while maintaining a compact size for easy transport. Wide compatibility: Works with multiple fast charging protocols including PD1 and QC, providing flexible testing options for a variety of devices and chargers. Convenient operation keys: Features dedicated keys for voltage adjustment, allowing quick and straightforward switching between different charging levels as needed. Voltage level monitoring: An integrated LED indicator displays the current output voltage during testing, enabling clear realtime monitoring. Use scenarios Test a PD1 or QC charger with a range of voltage levels to verify stability and performance under different loads. Validate fast charging adapters in a workshop setting to confirm they meet expected voltage outputs during operation. Perform onsite verification of charging equipment by switching voltage levels and monitoring the resulting output with the LED indicator to ensure consistency.