The met tritium illuminated door handles suitable for use, such as in hospitals, care homes and tunnels. They can even be used in extreme and dangerous environments. They are also suitable for use in wet areas, they can even be immersed in water. They are also suitable for use at temperatures from -60˚C to + 80˚C. For the first time, the door handle has been illuminated with a Betalight developed by Betalight bv. These Betalights are produced according to ISO 9001 and meet the requirements of the British Ministry of Defense Standard 62/4, USA standard ANSI N540.