The XT Series Self-Luminous exit sign frame, backplate and canopy shall be of ABS molding
Tamper proof assembly with no removable fasteners
Frame finishes include white or black
The signs can be mounted flush to wall or ceiling without a canopy
The faceplate is constructed of acrylic (optional Polycarbonate) .13 inches thick
The legend is constructed of non-glare polycarbonate, .015 inches thick, open letters, field programmable arrows and background colors include red or green
Contrast ration for both conditions shall exceed .5 and meet requirements of UL924 and NFPA. Non-Electric - These exit signs do not require batteries, lamps or electricity for illumination
Electrical wiring, power, lamp replacement and maintenance are not required
Illumination is provided by phosphor-coated borosilicate tubes filled with tritium gas
Tritium gas energizes the phosphor-coated tubes in the sign
The low energy beta emission of tritium striking the phosphor coating inside the pyrex® glass tubes causes illumination to be generated
