The Haztec Eurosmart 8-82613 is a siren used on most of the emergency fleet here in Hong Kong since the year 2020. Hong Kong emergency services tend to use Premier Hazard 7109 on almost all the existing vehicles ,some Haztec Eurosmart 8122 series on their Fire appliances as well as the Whelen WPA112 on their Fire first response motorcycles and Hansch Type 620 on their police motorcycles. New police patrol vehicles and some new fire appliances are fitted with this new siren.
What's special about this siren is its unique Wail tone. The Wail has a very different pitch compared to the one available on the existing 8122: the high frequency climbs much faster and holds longer then falls.

Tones included are:
-Wail
-Yelp
-Hilo
-Pulsar
-Airhorn

See Hong Kong emergency vehicles responding with this siren:
-https://youtu.be/DUgNn6NyoD8
-https://youtu.be/B2_ONCLnXdA
-https://youtu.be/L9UydVw-nw8
-https://youtu.be/56uuEblQiwc
-https://youtu.be/3TZdRWWPqe4
-https://youtu.be/l9wxeujamkU

Demo:

Credit:
@TG757 Fire & Ambulance Channel, @SCDF Stn 33 Emergency Responses & @LucianAndrei on YouTube for uploading their videos.
Tones were extracted from their videos
-Wail, Pulsar: -https://youtu.be/C32fRrIIVaU
-Hilo: -https://youtu.be/AmCvtvKpQmI
-Airhorn: -https://youtu.be/2w1ZG3bC_Ro
-Yelp: -https://youtu.be/jI-71VoDLks