Front element for push button Harmony ZB5F. Front blue, cover plastic, unlabeled. Dimensions (WxHxD) 37x37x30 mm, mounting diameter 30.5 mm, weight 0.03 kg. Mechanical life 500,000 cycles. Head shape round, flush - flat installation. With high vibration resistance and chemical resistance, ambient temperature -40 to +70 degrees C. Certifications listed by UL, CSA. Product standards in accordance with UL 508, EN/IEC 60947-5-4, EN/IEC 60947-1, JIS C 4520, EN/IEC 60947-5-1, CSA C22.2 No 14.