This is a a real odd ball I found, a large size (5cm button, 6cm including bezel) button with PUSH written on it, which has RGB leds inside you can control, and an open-collector output you can read.
See the images for pinout and some crudely drawn example diagram for reading the button press and driving the LEDs.
This is an Open-Collector output button, it does not work like a normal old switchm in fact it’s an opto-interrupter internally, you will want to read this with a microcontroller as I’ve eluded to in the diagrams.
There is very little information on the interwebs about this switch, I found a couple of Japanese PDFs where people had used it.
As far as I can see, it is not possible to remove the word “PUSH”, it’s sort of inside the moulding I think.
I do not know what type of connector it is! You will be best to either solder directly to the pins of the connector, or probably easier to disassemble and solder directly to the pcb where the connector is soldered, if you use thin 30 AWG wire you should be able to feed it out through the same hole the connector is in easily enough I think.
Absolutely no idea what you might use this for, I think it must be made for like game machines or something like that maybe, really really weird button.
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