The Model 242 DC Isolator meets all requirements of Caltrans TSCES 1989.
- Model 242 Caltrans
- Model 242-J Jumpers for Polarity & Min Pulse
- Model 242-LAX City of LA DOT Approved
- Model 242-NY NYSDOT, 24VDC Powered
Note that as of December 2014, the Model 242 is no longer included in the Caltrans TEES and has been replaced by the Model 242L. The Model 242L is backward compatible and powered by 24VDC.