Front element for illuminated pushbutton Harmony ZB4. Transparent front, chrome-plated metal cover, unlabeled. Dimensions (WxHxD) 29x29x32 mm, mounting diameter 22 mm, weight 0.027 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 range with 22 mm installation dimension combines easy installation, efficiency and modern design. Certifications according to LROS (Lloyds register of shipping), UL listed, RINA, DNV, GL, BV, CSA. Product standards according to UL 508, EN/IEC 60947-1, EN/IEC 60947-5-5, EN/IEC 60947-5-4, CSA C22.2 No 14, JIS C 4520, EN/IEC 60947-5-1.