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auto chart projector Feature: CP-300 Auto Chart Projector is a precision optical instrument for accurate refraction. It provides 30 different charts and 35 masks, with programmable remote control. Duochrome test charts to check single and binocular vision, and polarized test charts to check binocular vision and ocular muscle imbalance specification: Projection distance:1.5m 6m Projection magnification: 30 x (at 5m) Projection size: 330mm(W) x270mm(H) (at 5m) Chart: 30 different pattern Speed of chart conversion: One chart per 0.03s Mask: 1 open, 5 horizontal lines,8 vertical lines, 21 single letters, 1 red/green speed of mask conversion: One mask per 0.03s Program: 2 sets programs, each program contains up to 30 steps Light source: 12V,50W Halogen Lamp Auto-off function: After 10 minutes idle time. Power source: AC 220V ,50Hz or 110V, 60Hz Power consumption: 80W Dimensions: 300mm(L) x 230mm(W) x 240mm(H) Net weight: 6Kg Accessories: Remote control, Polarized metal screen, halogen lamp, polarized glasses, fuses(2), batteries(2)