The TSR-06S with Coded Rotary Switches SMD RoHS by Sungmun is a robust, reliable, and easy-to-use coded rotary switch. It features a surface-mount design, which makes it suitable for high-density board layouts. The TSR-06S is RoHS compliant, so it is not toxic and it has a long operating life. The rotary switch is available with 15 or 20 positions to provide flexibility and accuracy during programming. It is also dust-proof and waterproof, making it resistant to environmental changes and wear and tear, further increasing its durability. Additionally, it is designed with standard resistors to ensure a clean and clear signal, giving you precise digital control.