A method and device are disclosed for orienting flat items of mail towards a narrow edge in a U-shaped conveying channel in which they are conveyed in an upright position and without being jammed. The non-voice communication service may be processed through a server in communication with the first and second users. In a second illumination state, the illumination unit receives additional LED current from LED driver 110 via the electronic switch as controlled by the LED driver where the illumination unit additionally emits a second light output. For example, a diode may include a heavily doped n-type silicon region, an intrinsic silicon region, and a nickel oxide layer serving as the p-type terminal. The curable coating mixture is a mixture of two parts, part A containing a solution of a fluoroelastomer containing a specified acid number, and the other part B providing a curing component which is a mono-primary amine containing silane or condensate.