Luminous flux standard lamp and color temperature (spectral distribution) standard lamp, used for the transmission of luminous quantity values. The values are derived from the US NIST and the Chinese Metrology Research Institute. They have good repeatability and stability. Color temperature: 2856K (24V 50W) 3000K(6V10W) Luminous flux: Approximately 120 lm (6V 10W) Around 800 lm (24V 50W) Lifespan: > 300 hours
