The S463RL is a low pressure regular intensity UV lamp which operates at a wavelength of 254 nm. These Sterilume-EX lamps can be used in the Silver series, the old style Gold Sterilight system, the 5 gpm vending system and 12V DC system. The "EX" lamps can easily be identified by the green lamp base. All Sterilight UV disinfection lamps have a 1 year/9000 hour life. S463RL Lamp is 28 Watts