What model siren do these ambulances have?

Question

The sirens on the ambulances in these pictures, mounted below the headlights on both sides.

http://www.massfiretrucks.com/Swansea_Medical_Rescue_2_2007m.jpg

http://www.massfiretrucks.com/Seekonk_Rescue_1_2006.jpg

It sounds like the Federal Q siren, but its electronic and I can't find the electronic version of the Q (the E-Q2B) with a speaker like that. Apparently Whelen and a few other companys made some copies of the E-Q2B after it came out but didnt sound as good. Anyone know the make and model of the siren?

Answer 1

I am not sure but it might be a Whelen WS 295HFS2 siren with diagnostic and hands-free switching.