Detailed Product Description Name: push button, push button switch, push button box,control metro lyrics ,Metro station control Specifications:1) Ambient temperature: -25 ~ 70oC2) Rated insulation voltage: UI=500V3) Pollution class: III4) Degree of protection: IP65 / IP665) Altitude above sea level: <2,000m6) Meets IEC60947-5-1 and EN60947-5-1 standards