As of 4 October 2004, the TL925 ceased to be available. Production of the TL925 was halted once the CR9000X dataloggers were introduced because the interface is not required for the CR9000X dataloggers.
The TL925 RS-232 Interface connected the CR9000 with the serial port of a computer. The TL925 isolated the computer's electrical system from the data logger's, thereby protecting against ground loops, normal static discharge, and noise. The TL925 also converted the computer RS-232 serial protocol to the CR9000 TLink high speed serial protocol. The TL925 supported baud rates from 300 bps to 115.2 kbps.