Features:

*Three colors LED light + "BiBi" sound alarm

*Stage-by-stage sound alarm

*Optional sensor style and color

*Human voice alarm (option)

*Anti-freezing, rainy-proof design, work well under extreme cold weather

Technical Specifications:

*Working voltage: DC12V +/- 2V

*Input: 4W(max)

*Beeper: 90-105dB

*Working temperature: -40~+80¢XC

*Frequency: 40KHz

*Detection distance: 0.4-2m