Introducing PCB circuits and assembly bolts membrane switch, the perfect combination of tactile feeling keys, SMT LEDs, connectors, resistor, and sensor. This membrane switch is designed for a wide range of applications, from industrial to consumer electronics. Its PCB circuit is built with a special design that ensures superior performance and reliability. This membrane switch is also designed to be easy to install and maintain. Its assembly bolts make it simple to assemble and disassemble, and the PCB circuits are designed to be durable and reliable. Furthermore, the tactile feeling keys provide a comfortable and responsive experience, while the SMT LEDs provide a bright and vibrant display. Finally, the pin headers are all designed to ensure a secure connection.