Ensure the product complies with international safety standards such as IEC/EN 60947-5-1 for low-voltage switchgear and control gear. Key specifications include the Rated Insulation Voltage (Ui) and Conventional Thermal Current (Ith), which must align with your machinery's power requirements. For global trade, look for CE, UL, or CCC certifications. Additionally, confirm the contact block configuration (e.g., 1NO+1NC) and whether the button features LED illumination for status indication, which enhances operational safety.