check the user manual by clicking on the link below:
http://docs.google.com/viewer?a=v&q=cache:Ko3asIwvEt0J:uk-surplus.com/manuals/synergy2120.pdf+Synergy+2120&hl=en&gl=uk&pid=bl&srcid=ADGEESgJAhoxPaAub2LzBflp3u18QqnOEsIhFwrgiF5kN4TZ3rMw5iGI6MLcKKRDrGdf_qpiQXhrj_1-SltpK4eo8L8P1So4mBXWGsmy3ewLBPar2Hy9d0bRHGk6sP6fpPDVRWb1aO_4&sig=AHIEtbTaEeEF8HJsEst7poWlU_OFynqqDQ
Abdul
November 2009