当车辆进入雷达检测区域时（大约为雷达测速屏前部600m的范围内），微波雷达将自动探测车辆行驶的速度，并在LED显示屏上予以显示及时提醒驾驶员注意降低行驶速度，从而有效减少因超速引发道路交通事故的发生。

    雷达测速屏具有显著的醒目诱导功能，可以明显减少交通事故，达到安全的效果。

• 雷达频率:k波段（24.150G）
• 可探测距离:≤0~1066m
• 响应时间:≤5ms

Introduction to radar speed sign/driver feedback sign(DFS):

 
DFS is one of our independent research and development for reducing drivers’ speed and improving road safety. We have made the product since 2006 and occupied most of the Chinese market share. Our DFS can be powered by solar or AC.
DFS can be used for the following locations:
1/residential/neighbourhood
2/car park/stereoscopic parking lot
3/expressway
4/general highway
5/factory/plant area
6/construction sites
7/mine or railway transport area
8/accident-prone area (such as bend;tunnel;bridge)
9/school area
10/hospital
Anywhere for enhancing public safety.

Technical parameters:
Components: LED panels; controller; radar device; display case; solar panel; battery; cable
Font:
Height: 35 cm
Color: red or yellow
Two-color: green for safe speed; red for speeding
Quantity: 2 characters or 3 character
Screen size: 70*40 cm
Display case size: 80CM *55CM width *7CM depth
PCB (triple digits) size: 69*38 cm
LED：
Brightness: Red: 5000-7000mcd; yellow 6000-8000mcd; green 10000-12000mcd
Perspective: Red: 30 degree; yellow: 30 degree; Green: 45 degrees
Radar: k-band directional Doppler radar
Monitoring range: 4 lanes
Speed measurement range: 5---321 km/h
Tolerance: 1-2 per km/h
Transmit mode: RS232 interface series
Response time: less than 5ms
Communication protocol (between the controller and the display panels): I2C Protocol
Power input: 90-240V AC
Operating voltage: 12V DC
Current consumption: Max 10W; standby: 0.2W;
Battery: 12V/65AH; 21 kg
Gross weight: solar 40 kg; AC: 20 kg
Solar Panel: 12V 40W; 12V 80W
Reflective sheetings: high intensity grade
Operating temperature:-40 ° c---70 ° c °
Added functions if you need: DFS with saving function; software used to deal with the saved data for accumulation
Guarantee period: 2 years
The certificate of inspection, warranty card, installation manual are provided when finished.
Manufacturer: Hangzhou Lailai technology limited
Certified by CE/FCC/ROHS