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详细介绍技术特性 Characteristics & Specifications◆ 自动量程切换 Auto-range switch◆ 5位数字显示 5 digits LED display◆ 零点稳定且精度高 Low zero drifthigh accuracy◆ V(λ )修正水平高，达到一级照度计要求 Fine V(λ ) correction detectorclass1according to GB/T7403 standard◆ RS-232通讯功能 RS-232 interface