Kindly Note, QingPu is the FIRST manufacturer to produce such kind jack - WQP-PJ301M-12 (The item No was firstly denominated by QingPu), if anyone makes same as ours, they must copy from us!
WQP-PJ301M-12 is a mono switched 3.5mm jack socket, vertical PCB mount, supplied with a ring nut or hex nut.
THE SWICH COULD PASS DESTRUCTIVE TEST. Normal life is around 5K cycles, WQP-PJ301M-12 is 20K cycles at least.
Pls see IMPROVED version (WQP-WQP518MA) here: http://www.qingpu-electronics.com/en/products/WQP-PJ398SM-362.html
Pls see STEREO version (WQP-WQP419GR) here: www.qingpu-electronics.com/en/products/WQP-PJ366ST-364.html
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