Front element for key switch Harmony ZB4. Front black, cover chrome-plated metal. 2 positions 90°, key removal in any position. Dimensions (WxHxD) 29x29x72 mm, mounting diameter 22 mm, weight 0.098 kg. Mechanical life 1,000,000 cycles. Lock type Ronis 3131A, latching, head shape round, standard. With high vibration resistance and chemical resistance, ambient temperature -40 to +70 degrees C. The modular metal program with 22mm installation dimension combines easy installation, efficiency and modern design. Certifications according to GL, DNV, LROS (Lloyds register of shipping), RINA, CSA, UL listed, BV. Product standards according to UL 508, EN/IEC 60947-1, EN/IEC 60947-5-4, EN/IEC 60947-5-5, EN/IEC 60947-5-1, GB 14048.5, CSA C22.2 No 14.