PLT High pressure standby sodium lamp. Single ended. ED23.5 bulb shape. Universal burn position. 9500 initial lumens. 22 colour rendering index (CRI). 55 lamp operating voltage. Operating at 100 W and featuring a colour temperature of 2000 K. Open/enclosed rated luminaries type. The clear HPS bulb exhibits superior performance and efficacy. With an average rated life of 24000 hours. Is a practical bulb for outdoor lighting situations. This bulb can be applied in any position and used in enclosed fixtures only for outdoor purposes such as streetlights and security lighting. Base temperature 190°C. Bulb temperature 400°C.