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Siemens 56 Program Digital Time Switch 230V AC, Multi Languages Siemens 7LF4941 0, The Siemens 7LF4941 0 is a USB adaptor and Software for SIEMENS Digital Switches 7LF4521 0 order code 55 7231 and 7LF4522 0 order code 55 7232. The adaptor allows simple program creation for Siemens timer clocks with the help of a PC. Siemens 7LF4941 0 USB Adaptor and Software for SIEMENS Timer Clock Profi
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