Trade Lead Description:
This safety lamp has two working modes: when the mail luminous source lightens, it has the strongest illumination intensity, in this situation, it can work 26 hours continuously, while the auxiliary luminous source lightens, it can work more than 100 hours. The mail luminous source is a high power led of 1 W, the illumination intensity is no less than 1500 Lux, the auxiliary is a patch led, the colour temperature is more than 5000K. Both the main and auxiliary luminous source are controlled by switch, you may select the luminous source according to needs. When power on the main luminous source, it outputs constant current of 150mA±10mA. When the battery voltage drops to 3.1V±0.1V, it will switch to the auxiliary luminous source automatically. In this case, the auxiliary luminous source can still lighten for 5 hours, so to make sure the miners have enough time to get out of the shaft. Posted from China - Hebei on 14 November, 2008
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