LF18 rotating beacon is suitable for a lot of emergency vehicles.  There are 22 flash patterns in total, including rotation flash mode.

Optional Magnet mount, screws mount and extendable pole mount is available.

You can choose from amber/red/blue/clear lenses depending on your different requests. 
Magnet mount is good for police vehicles or sedans. We will provide you with 3m cables with a cigar plug. 
Usually, Screws mount is better for fire trucks, plow trucks, and trailers. It is hard wires with 20cm length.
If you have a motorcycle, you just need a beacon with an extendable pole mount. There is a button at the bottom of the beacon for pattern change.