Luminaire for lighting blackboards. Meets all educational lighting requirements and standards. Stainless steel housing with white powder coating. Wall mounted using brackets (brackets are not included in package). Input voltage (AC, 50Hz), V: 176...264 AC frequency, Hz: 50 Flicker, %: 1 Climatic modification and category of placement: УХЛ4 Color rendering index: 90-100 Protection class: II Mounting method: Surface mounting Ingress protection (IP): IP40 Radiation angle, °: 101 Impact resistance: IK02 Power factor: 0,95 https://www.varton.ru/products/svetilniki-dlya-obrazovatelnykh-uchrezhdeniy/e-seriya-dlya-shkolnykh-dosok/e220-ip40-shkola-doski-1195kh100-mm-ip40-analog-1-36/svetodiodnyy-svetilnik-varton-e220-dlya-shkolnykh-dosok-25-vt-cri90-4000-k-ip40-1200kh100kh50-mm-s-p/