RC CONTROL:
For RC use the siren comes with a  PS4aT modul  (nr. 1)
It holds  2 "Toggle switches" og 2 normal on/off
switches. The module uses one channel on the RC receiver
Yhe first  toggle-switch can be used to start the siren and for changing sound. Second switch can be used to stop the siren.

The two normal switches can be use to turn on and off blue lights
or other kinds of lights on the vehicle.

(nr. 2) comes with the PS4aT module as a manually control unit
to be used during testing.
Video with sound
2
1