MBY5500 Explosion-proof Directional Light This product is widely used as warning mark in dangerous places, as well as for signal communication and position displaying on the construction sites, operation monitoring, fire fighting and rescue efforts. Safe and explosion-proof: MBY5500 high intensity explosion-proof directional lamp is of highest explosion-proof grade, and can be used safely in various inflammable and explosive places. Water-proof and fall-resistant: Its shell is made of bullet-proof materials imported from US, so as to ensure the operation 50m under the water. And it can resist water as deep as 50m. Operation time: It can operate for 500 hours continuously when provided with two No.7 batteries. Agility and convenience: Due to small volume and light weight, it can be operated simply, and held with suspender, buckle, binding or magnetic attachment. Operating environment : It can work normally under environment with temperature within -60℃ ~ 150℃. Color for warning: Red, yellow, green and white