产品说明：

用于测量光源的光通量、照度、光强、亮度等参数时信号探测，严格按照国家标准设计，V(λ)修正水平达国家标准级精度，测试数据可直接溯源至中国计量院NIM、美国NIST。

Used to measure for lighting source of luminous flux, illumination, luminous intensity, luminance etc. in strict accordance with national standard design, V(λ)correction, up to national standard accuracy test data can be directly traced back to China Institute of Metrology NIM, NIST United States.