Front element for push button Harmony ZB4. Front black, cover chrome-plated metal, unlabeled. Front element push button for harsh environments, black. Dimensions (WxHxD) 37x18.5x37 mm, mounting diameter 22 mm, weight 0.036 kg. Mechanical life 1,000,000 cycles. Head shape round, standard. With high vibration resistance and chemical resistance, ambient temperature -40 to +70 degrees C. The modular metal program with 22 mm installation dimension combines easy installation, efficiency and modern design. Certifications according to CE, UL, CSA. Product standards according to CSA C22.2, UL 508, IEC 60947-5-1, IEC 60947-1.