... abrasion andcorrosion, IP68.3.High quality tempered glass with excellent light transmittance.4.Comply with Ex, ib, IIC, T4, IEC60079-11, ... EN60079-11.5.Designed with advanced Optical Principles, making visual ... Click-type switch high output,working output,and flashing light.7.Constant current make sure of brightness stability8.Lithium ...