Front element for push button Harmony ZB4. Front red, cover chrome-plated metal, type H021. Front element push button for harsh environments, red. Dimensions (WxHxD) 37x18.5x37 mm, mounting diameter 22 mm, weight 0.036 kg. Front element, round, DM 37 mm (IP66/67/69/69K) with labeling. 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 UL, CE, CSA. Product standards according to CSA C22.2, UL 508, IEC 60947-5-1, IEC 60947-1.