U-shaped, 24 AWG, male to male, wire length 2 mm, 5 mm, 7 mm, 10 mm, 12 mm, 15 mm, 17 mm, 20 mm, 22 mm, 25 mm, 50 mm, 75 mm, 100 mm, 125 mm. Note: the circuit board is a little bit soft, easy to change the shape for connection test;If it is found that it cannot be inserted, check whether the cable in the PCB pin hole is intact.
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