You need to solder them on board using
soldering/welding iron. I sell switches only, without chip/circuit
board. The picture of a chip is for compatibility and ilustration only .( I do not sell board or chip/transponder) Please check your switches before you buy
them. Cars have different models of keys, so they have different
buttons too.
If you need more buttons (50pcs) or you need it
for some other car,(bmw, renault), just send me private message.