TYN - BY(J) Aviation obstruction light The power supplying system of TYN-BY (J) type solar panel aviation obsturction light is composed of UHB-LED (made in USA), spraying painted steel sheet base, polycarbonate lamp-shade, and solar system. The light-operated switch works dusk to dawn automaticly. 20W solar panel and 2pcs of 7AH maintenance free storage battery gurantee that the light could work continually for more than 25 days in the cloudy day. Benefits: Significant cost savings: no fuel or electrical bills Safe Long service life Easy installation Technique parameter Flash Frequency: 20-60/minute (can be adjusted according to customers requirement) Service life of LED: 100,000 hours Intensity: Menium intensity (2000cd) Power supply mode: Solar panel and maintenance free storage battery NO. of battery: 2 pcs Voltage: 12V Capacity: 12V/7AH Solar panel: 10W Ambient temperture: -40-70 Net weight: 15kg