The tactile switch of kailhhua Electronics
Kaihua electronics manufactures the keyboard switch,joystick potentiometer,below is CTA521201A02-2 .it has 5.2*5.2*1.2mm and 180+/-30gf and 1.5 million cycles lifespan.it was widely used for the printer button.it has mini SMDsize frame and fitable operation force as well as long lifespan.