* Features:

1) Stage-by-stage sound alarm

2) Optional sensor style and color

3) Human voice alarm (option)

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

* Technical Specifications:

1) Working voltage: DC12V2V

2) Input: 4W(max)

3) Beeper: 90-105dB

4) Working temperature: -40~+80C

5) Frequency: 40KHz

6) Alarm distance: 0. 3-0. 6m

7) Best detection distance: 0. 4-1. 5m