Exclusive single battery panel light with LED light guide technology and automatic test for low inspection effort. Universally applicable for permanent and standby operation as well as 1 hour, 3 hour or 8 hour operation. Clear design with highly transparent frame with replaceable, internal screen-printed pictogram. Includes pictogram set (arrow right, left, down, up, blind) for the most common applications. Only one order number for ceiling and wall mounting. Can be expanded with extensive accessories, e.g. housing for ceiling installation, cable suspension, pictograms, for 90° wall mounting. Low installation height thanks to compact electronics housing with a height of just 22 mm. Minimized maintenance effort thanks to long service life of the LEDs of up to 50,000 hours. Optimal visibility due to high luminance of the white contrast color (> 500 cd/m2) in accordance with DIN 4844-1 / ISO 3864-1 (for bright environments in mains operation) and high uniformity Lmin/Lmax > 0.8. Dimmable in 3 levels for use in dark ambient conditions. Simple error analysis and status display via bicolor LED and test button, 1 minute switch-back delay after power returns.