Description: The product uses 12 high brightness red LED strobe light, built-in intrinsically safe backup battery, can work in the external power supply is interrupted after more than 100 hours for the presence of explosive gases in underground coal mines, as the move JiuShengCang, temporary refuge chamber and fixed position of the guide and instructions shelter. The main technical indicators: Item Specifications Rated voltage 18VDC Working current 50mA (charge current 300mA) spare battery 3.6V8000mAh battery operating time> 100h flash viewing distance 40m 1s flash frequency form Exib I Mb explosion proof rating IP 65 Dimensions 221 × 122 × 70mm Weight 0.8kg