Multifunctional tester The QD300 model allows ignition coil actuation tests along with fuel injector and solenoid valve operations, catering to diverse automotive needs. Easy adjustments your testing with adjustable settings for frequency (1 Hz 100 kHz), voltage (25V 12V), and duty cycle (1% 100%), enhancing your diagnostic capabilities. Reliable protection features Equipped with reverse polarity and overcurrent protection circuits, this tester prioritizes safety while providing robust performance across various applications. Compact and portable Its lightweight ABS construction makes it easy to carry around, for both professional use in workshops and use in garages. Use scenarios In a workshop, use the QD300 to actuate ignition coils and test associated fuel injectors and solenoids during engine or maintenance. On a test bench, verify injector and solenoid valve operation by applying controlled signals and observing cycle response and timing. In field service, perform portable onsite testing of ignition, injector, and solenoid systems on diverse vehicle types without bulky equipment.