Front element for illuminated pushbutton Harmony ZB4. Front white, cover black metal, unlabeled. Dimensions (WxHxD) 29x29x30 mm, mounting diameter 22 mm, weight 0.026 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 DNV, RINA, GL, BV, LROS (Lloyds register of shipping), UL listed, CSA. Product standards according to JIS C 4520, EN/IEC 60947-1, CSA C22.2 No 14, EN/IEC 60947-5-1, EN/IEC 60947-5-4, EN/IEC 60947-5-5, UL 508.