Features: 7 bands digital LED display Stage-by-stage sound alarm Optional sensor style and color Human voice alarm (optional) Anti-freezing, rainy-proof design, work well under extreme cold weather Specifications: Working voltage: DC12V 2V Input: 4W(max) Beeper: 80dB Working temperature: -40~+80ípC Frequency: 40KHz Detection distance: 0.4-2m 45*33*34cms
