OBSFS-24

1. Overview

The Sanwa Denshi OBSFS-24 is the silent version of Sanwa's 24 mm snap-in arcade pushbutton — the "S" denotes a silenced/dampened switch that greatly cuts click/bottom-out noise while keeping Sanwa's light, responsive feel. The 24 mm size is Sanwa's standard for start/option/auxiliary buttons (vs. 30 mm for main action buttons). It has a built-in silenced microswitch and a short ~0.7 mm dampened travel, in many solid colors. It's the 24 mm counterpart to the silent OBSFS-30.

2. User Sentiment

Chosen by fight-stick/cabinet builders who want Sanwa quality with quiet operation for Start/Select and auxiliary buttons — ideal for streaming, shared spaces, and late-night play. Praised for noticeably reduced noise versus the standard OBSF-24 while staying responsive; the trade-off is a slightly softer feel from the dampening.

3. Real-World Applications

Quiet Start / Select / option and auxiliary buttons on arcade cabinets, fight sticks, and hitbox/leverless controllers; pairs with 30 mm silent (OBSFS-30) main buttons for a fully quiet build.

4. Technical Specifications

• Type: 24 mm silent snap-in arcade pushbutton
• Switch: built-in silenced/dampened microswitch
• Travel: ~0.7 mm (dampened)
• Actuation: light momentary (dampened feel)
• Mounting: snap-in (24 mm cutout)
• Colors: many solid colors

5. Ordering & Compatibility

Fits standard 24 mm snap-in panels — a quiet swap for OBSF-24; pairs with 30 mm buttons (OBSF/OBSFS-30) for main actions. Sold by arcade specialists (Focus Attack, Paradise Arcade, Arcade Shock, Japanese retailers). Family: OBSF-24 = standard (clicky), OBSFS-24 = silent (this), OBSFE-24 = long-life reed/electronic.

6. Known Issues

No reliability concerns — Sanwa quality. Practical notes: the silencing makes the feel slightly softer than standard OBSF, confirm snap-in vs screw-in mounting and the 24 mm cutout, and verify the microswitch tab size matches your wiring.