Features: The controller can be powered by both 12V and 24V power source ,suitable for more car. Wide range of using temperature ,can work normally under severe environment. Applicable to all motor vehicles, such as car, motorcycles, electric bicycles, etc. preferably installed in LED high position brake lights. Whenever braking, the high brake light will continuously flash (four flashes + slow flash four times and then turn on constant light), the driving is safer. Improve the rear car warning, try to avoid rear-end accidents and improve driving safety. Specification: Item Type:Strobe Flash Module Controller Product Model: GS-100A Working Voltage: 12~24VDC Maximum Operating Current: 2A Product Ruler: 49.5 X 27.5 X 14mm / 1.95 X 1.08 X 0.55in Working Environment Temperature: -40~50°C Storage Temperature: -50~80°C Package List: 1 x Controller 1 x Adhesive Tape Note: Wiring method: direct connection. Connect the LED first and then press the power supply, otherwise there is no strobe effect. 1、The controller can be powered by both 12V and 24V power source ,suitable for more car. 2、Wide range of using temperature ,can work normally under severe environment. 3、Applicable to all motor vehicles, such as car, motorcycles, electric bicycles, etc. preferably installed in LED high position brake lights. 4、Whenever braking, the high brake light will continuously flash (four flashes + slow flash four times and then turn on constant light), the driving is safer. 5、Improve the rear car warning, try to avoid rear-end accidents and improve driving safety.