If you are buying buttons from Sanwa's official store, it may be confusing as there are multiple listings for buttons.
Product pages are separated by the switch it uses: 1F, DF, or lamp holder (旧型). Before adding to cart, three options will need to be selected: button color, switch, and lamp type. The lamp options are LEDs (5V, 12V, or 24V with colors) incandescent wedge ball lamps (194), or no lamps (LN); LEDs will be an extra charge, while no lamps will have a slight discount.
If you are buying buttons for an HD pop'n music cabinet (Type E or F),
click here. These include a
Sanwa OBSA-LHS1F-LN microswitch with each button. If you need lamps, select 12V LEDs in your needed color.
If you are buying buttons for an SD pop'n music cabinet,
click here. These include a traditional lamp holder and Omron V-10-1A5 microswitch with each button. If you need lamps, select 194 bulbs.