... electric circuit is composed, May fix on the mineral product safety helmet uses. The host vice-photosource uses separately: Main photosource ... than 3ms, surpasses the national standards 15ms, enhanced the operational safety greatlyKL5LM-K - Miner lamp,L - Lithium battery5 - 5Ah--- ... for automatic Ammeter zero, the charge had been completed, can security be assured in use.4, normal use: the miners ...