Our product all have obtain governments approval explosion proof certificates, quality is 100% guaranteed in flammable environments, such as petro chemical, oil tank and mining, gas station, medicine, army, oil plant etc.Our product could realized safety monitoring this explosive environments, also our corporation offer whole line technical support and installation assistance, we offer 1 month return and 1 year free requirements because of our quality problems. Explosion-proof level : Product material: high quality carbon steel(optional to select to use stainless-steel material in corrosion environment Functions and features: infrared to see in 30m/60m/80m distance etc. Infrared light automatically start to work when there is less light, it could work at night or there is poor light sum Use unique special explosion proof glass, high light flux rate, avoid infrared light spot Nanometer invisible features, rain wiper functions, non-stick water, non-stick oil, exclusion of dust High hardness and high quality carbon steel material, surface coated processing technology Optional to add some functions according to customer requirements: e.G.:internet module, optical transceiver module, wireless transceiver module, heating device Work environments : chemical industry, oil, steel, iron, military project, medicine, mine, oil warehouse, ship, oil drilling platform, gas station, production of fireworks and firecrackers, food processing and storage 9kg per set and 4sets per carton, one carton 38kg