Construction site of H0 gauge with flashing lights and work noises.
Ten warning beacons (five with flashes), a Mercedes-Benz construction truck with a flatbed and load of gravel and yellow flashing lights.
Electronic sound and light circuit and loudspeaker.
The circuit controls the following processes:
A lightning bolt passes over the warning beacons, the truck's lights flash alternately.
The loudspeaker emits a jackhammer, saws and other working noises in random order.