Features:
* Stage-by-stage sound alarm
* Optional sensor style and color
* Anti-freezing, rainy-proof design, work well under extremely cold weather.
Technical Specifications:
Working Voltage: DC12V +/-2V
Input: 4W(max)
Beeper: 90~105dB
Working Temperature: -40°C~+80°C
Frequency:40KHz
Alarm Distance: 0.3~0.6M
Best Detection Distance:0.4~1.5M
Detection Distance: 0.4~2M