The Boss FS-5U is a compact and durable momentary footswitch designed for real-time control of compatible gear. Unlike latching switches, it only engages while pressed—making it ideal for functions like tap tempo, sustain, effect hold, or loop triggering. Its sturdy build and simple operation make it a go-to utility pedal for guitarists, keyboardists, and producers alike.
Key Features

• Momentary (unlatching) operation—active only while pressed
• Compatible with Boss and Roland gear, as well as other brands
• Reversible polarity switch for flexible setup
• Connects via standard 1/4" instrument cable (not included)
• Compact and pedalboard-friendly design
• No batteries or external power required

Connection: 1/4" TS jack (standard instrument cable)  Power: Passive (no power required for switching; LED not included)  Dimensions: 96 x 90 x 43 mm  Weight: 240 g  Color: Silver  Construction: Rugged metal housing