Mercedes Programmer Smart Key its communication with key via IR and RF in mercedes benz security  protoco that meansyou can use it for all type keys. What only you have to do is to update .   
The new Mercedes device working with smart key (old and new) employinging for car since 1997 up to 2005 - without keyless go system. You can program newkey (or used) in car and program own key if it doesnot work more.You read and program eeprom of CPU from Steering blocking module via diagnosticconnector (38 pins). Desolder and read via programmer two CPU fromElectronic Ignition Control Module. Load theese eeproms to program.Desolder NEC CPU from the key. Soldering it on the device, select the No. of key and program it. Solder all CPU on their places and start thecar.       
You can program new keys without the car - only with EIS and steering blocking module.You can read theese CPU with help programmer (for ex. ETL) for Motorolla CPU 68HC705X16(32).        
The new model smartkey is available programming all smart key model for all years models like W221 -W211 - W230 - W203 -W215 - W210