Name: radar speed limit sign Material: shell steel, stainless steel Specification and size: customizable Display mode: digital LED display with waterproof lens Speed limit value: can be customized according to the speed limit requirements Power supply: solar power supply system or AC: 110v-230v, DC: 12V Solar panel: monocrystalline silicon solar panel power: 18V/50W (customizable) Battery: lead-acid valve-controlled battery: 12V/20AH (customized according to requirements), life of > 3 years Radar system: Sweden imported high precision radar device, CE,FCC standards Measured distance: 10-300 meters Working hours: work for more than 180H in rainy days Working mode: constant bright working mode within the speed limit range, overspeed flashing reminder Switch: power switch Power adaptability: good Working environment: - 20 ℃ ~ + 70 ℃ Waterproof: IP58