Shangqiu Institute is a photoelectric device, development, production and sales of high-tech enterprise with strong technical strength and rich engineering design and construction experience, and a group specializing in product development, development of high-level technical personnel, has been form a set of industry, academia, research, sales, service as one of the operating mechanism; mainly engaged in solar intelligent controller dedicated inverter power supply, communications, special inverter, inverter control of one machine, solar grid inverter, emergency power supply (EPS), power / communication dedicated UPS, solar LED lighting products, research, development, production and sales; while providing a variety of applications and engineering services, including: all kinds of solar power street lighting system, solar power station, solar telecommunications power systems, wind - light and solar power generation systems, solar energy and power generation systems, solar home power systems, solar landscape lights, solar advertising light box, solar traffic lights / signs solar radio and television integration systems. At the same time for different user requirements for our customers to optimize the planning of renewable energy development, power supply technology, economic programs. 

 I have a complete production unit, quality management system, with the necessary expertise to debug and production test equipment. I unit of product marketing throughout the country, in the high altitude, bad weather, tight, heavy, installation, transportation, under difficult conditions, the Company can be quality, quantity, successfully complete the project design, and transportation. Products with good quality, high cost, improve service known domestic and foreign markets. 
 Solar street light controller and home solar power plant equipment with high technological content and stable products. 
 PWM-5 ~ 15A Waterproof solar street light controller 
 First, the controller operating current: 5A/10A/15A. 
 Second, the controller has 12V/24V automatic recognition (12V/24V solar-powered lights in case of compatibility). 
 Third, the controller has a superior waterproof, moisture-proof characteristics. 
 Fourth, the controller can be set to control the state of pure light. 
 Fifth, the controller can be set to light control + time control of the state. 
 Sixth, the controller can be set to control the output state for three hours. 
 1 in the evening light sources (solar light), turn off the night light (solar light), the dawn light source (solar light). 
 2 in the evening light control full power, half-power light source control work at night, the dawn light control full power. 
 Seven, the controller has a float, put off automatic recovery, temperature compensation, PWM pulse width modulation charge and so on. 
 Eight, the controller has over-voltage shutdown, low voltage shutdown, over-discharge shutdown, load, and reverse battery, solar modules, short, load short circuit, over temperature and over voltage, and other functions at night backflow