27
Jan
Roadside Variable Message Signs
![](https://tdklambdablog.wpenginepowered.com/uk/files/2014/08/HWS-Group-inc-ME_HD-300x204.jpg)
Traffic variable message signs are subjected to all the elements of weather. TDK-Lambda’s 50W and 150W HWS-A series of power supplies was selected by one sign manufacturer not only for having a limited lifetime warranty, but by using the /HD models, the product is guaranteed to start up at -40oC.