... . It conform to national standrad GB8108-1999. 2. Tone charactor: Siren, manual, wail, yelp, hi-lo, horn, radio. 3. Handhold ... . Monolithic integrated circuit in steadier performance. 5. Technical data:Police Siren For Car 1)Designed to fit most light barsType: Siren2 ... : 8 different siren sound 3: Also equipped with Car Warning lightbar4)Function: Vehicle ...