Whelen ISP188 12/24 volts?

[jayzce]

Are they 12/24 volts? i have seen some website listing it at 12 / 24 volts. How can i tell the difference? since i have one unit here just on the shelf and planning to put them on our firetruck but our firetrucks are 24VDC. When i bought this i was planning to install it on my vehicle but bought another one which is the CSP series.


or do you think it's better to install these on my truck rather the CSP series? Which one is better?


thanks

 

[rsqemt911]

they can do either/or.

 

[jayzce]

they can do either/or.

Thanks for the reply. So i can wire this baby to 24VDC. Great