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techniques led lighting led lighting · electric power because of the way they function ... used in petzl headlamps consume less electricity from 0.2 to 3 w this increases the burn ... lighting levels can help optimize electrical energy consumption by choosing the ... batteries once the available electric energy is no longer sufficient the 2m t ... thanks to stainless steel contacts and waterproof parts that protect sensitive parts if ... e+lite the signal and the duo line · waterproof -1 m and -5 m ipx8 some petzl ... headlamps are waterproof they can withstand an immersion of more ... duo line please note to maintain the waterproof properties of a headlamp certain care ... ipx4 or ipx6 descenders carabiners connectors t h leds light emitting diodes or ... don t use a filament they consume less electricity and have a longer life than ...