If you have not previously purchased Prolog and do not have a username and password this download will expire after 30 days. Please contact Lakewood Systems Ltd. for ordering information, usernames and password codes.

Download Prolog 2   For Gen 1 Data Loggers ( UL16, CPX and RX)

Download Prolog4 (ver.  4.3.25)   For Gen 1 and Gen 2 (NX, SX and TSR) Data Loggers