Model Number: HA911 Brand Name: Haian Key Specifications/Special Features: Voltage: 12VPower: 100, 150, 200, 300, 400, 450, 600 and 800WLight control: 4 channelsWith external triggerTones: wail, hi-lo, yelp, traffic, air horn, coco, engineeringand siren

Micro-chip designed and high efficiency transformer, unitdelivers significant and anti-jamming audible warning signals

Nice choice for various applications such as police vehicles,train stations, watercrafts and ports