This lot includes 20 tactile push button switches that provide reliable momentary input for compact electronics. Each switch features a 12x12x9.5 mm profile and a 4pin configuration, suitable for SMD and ThroughHole PCB mounting. Key benefits Tactile feedback on every press, delivering a clear and responsive user experience. Momentary action ensures the circuit only conducts while the button is pressed, helping to prevent unintended continuous operation. Small, square 12x12 mm footprint fits into tight spaces on compact boards and devices. 4pin configuration supports stable electrical connections and compatibility with common PCB layouts. Sold in a 20piece lot, enabling convenient bulk procurement for projects or production. Key attributes Type: Tactile Push Button Switch (Momentary) Size: 12x12x9.5 mm Pins: 4pin configuration Mounting: SMD ThroughHole capability (SMD ThroughHole) Packaging: 20Pcs/Lot Applications and use cases Microcontroller projects and DIY electronics as a user input button for interfaces, menus, or reset functions. Small control panels and handheld devices where compact, reliable momentary switches are needed. Prototyping, testing, or demonstrations that require a tactile switch with a defined momentary action and compact form factor.