Features 1. Button-type power switch design, LED power-on indication, intuitive and eye-catching, easy to operate, comfortable button feeling. 2. High-grade banana jack, non-terminal type, the test pen is more firmly connected. Snap-type bracket structure design supports a variety of instrument placement angles. 3. The concave-convex heat dissipation design ensures the longer life of the electronic components in the machine. 4. When the output voltage and current are not adjusted to test a single lamp bead, the voltage and current are automatically adjusted to the output. 5. Test lead short-circuit protection function When the lamp bead breaks down, or the test lead is short-circuited abnormally, the instrument automatically enters the protection state. When the abnormality is removed, it automatically returns to normal and can continue to be used for normal testing. Specification Material: Alumium Color: Yellow Size: 15 × 9 × 4 cm Weight: 280 g Output current: