High-pressure sodium vapor lamps with internal igniter. : Service lifetime: 3 years (at approx. 11 h/day). : High luminous efficacy. : Streets. Outdoor lighting. Industrial installations. Suitable for use in open and enclosed luminaires. Outdoor applications only in suitable luminaires. : Do not stare at the operating light source: The luminaire should be positioned so that prolonged staring into the luminaire at a distance closer that 4 m is not expected.. Disconnect mains before installation.. Must not be used if outer bulb is defective.. Protect from spray water..