... way of installingwe can supply installing or provide blueprint,the system can continuous work with three cloudy rainy daysUsual Question:Where ... work at any enviornment and under any circumstance? Because this system has batteries, so as long as it has power, ... WONENG SOLAR ENERGY TECHNOLOGY&SCIENCE CO.,LTD.AddressRoom1607, A area,NO.58, East Xinjian Road, Minhang District, Shanghai, ChinaMobile:+86- ...