The Model 242L DC Isolator meets all requirements of Caltrans TEES 2009 with Errata #2 (December 2014) and is listed on the Caltrans QPL list. The Model 242L is powered by the cabinet 24VDC and is backward compatible with the Model 242. Jumpers for 100 ms minimum pulse output and input Polarity are provided.
- Model 242L Caltrans QPL, Dual channel
- Model 244L, Quad channel half-width
Note that as of December 2014, the Model 242 is no longer included in the Caltrans TEES and has been replaced by the Model 242L.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.