1, board size: 48*60MM

2, board thickness: 1.6mm

3, board material: international standard plate, all tin plate, high strength fire resistant material, can be repeated disassembly.

4, net weight: 15g

5, PCB board design is reasonable, size 48*60MM, can be installed in the pocket.

6, are commonly used SMD components.

7, the left and right of the 3 elements are used to practice welding, each column with test points.

8, the middle of the circular circuit for the water lamp circuit, composed of CD4017, NE555, led.

9, double sided patch exercise, board occupancy rate, high cost performance.

10, circuit operating voltage 3-12V