User-Friendly & Protected: Features adjustable VADJ power output (1.1-12V), bright 3-digit display readable outdoors, and wide input voltage (9-24V). Built-in reverse polarity & over-current protection ensures reliable, safe operation. (Use recommended 12V input).
Intuitive Operation: Independent resistance/voltage measurement via a clear 2.4-inch screen. Easily select test modes with the MODE button. Color-coded connection guides (yellow/blue lines) simplify setup for all skill levels.
Clear Visual Status: LED indicators instantly show active test mode: Green (PWM), Blue (Value/Injector), Yellow (Ignition Coil), Red (Stepper Motor). Quick identification enhances workflow efficiency.
Key Specs & Support: Input: 9-24V/100W. Outputs: VADJ (1.1-12V/1.5A max), Main (2.5A max), Stepper (1.5A max). DMM: 0-36V/0-1MΩ. PWM: 1-100kHz/0-100% duty. Operating Temp: 0-55°C. Backed by a 12-month warranty and dedicated support.
Complete Portable Kit: Includes QDB-4A tester, power cable, 3 test cables, 4 single plugs, idle stepper plug, and stepper welding cable. Compact, lightweight design is easy to carry and store anywhere.