... abrasion andcorrosion, IP68.3.High quality tempered glass with excellent light transmittance.4.Comply with Ex, ib, IIC, T4, ... Click-type switch high output,working output,and flashing light.7.Constant current make sure of brightness stability8.Lithium ... , petroleum and petrochemical, aircraft, military, outdoors, indoors, portable-emergency kits.Ambient temperature: -20°C to +40°CCompany show