Shenzhen Topray Solar Co., Ltd.,Series Voltage Regulators,Series Voltage Regulators,China,Shenzhen,Shenzhen Topray Solar Co., Ltd. was established on August 15, 2002 with a registered capital of 1.236 billion yuan. It was listed on the Shenzhen Stock Exchange on February 28, 2008 (stock code 002218). It is the first pure A-share listed company in China. Van is covered so solar panel not exposed to sun. Drover Well-Known Member. Nov 7, 2013 11,811 Topray 555 1230 charge regulator manuals are easy enough to find on the internet. just in case you do not have the full instructions for your Top Ray 1230 solar controller, here is the proper instructions for you to download. Please note that o This 8 in 1 solar combiner can connect up to 8 individual panels together o Each input terminal is rated at a maximum of 7 Amps o Your 8 in 1 solar combiner uses a parallel connection, this will maintain the input voltage, while increasing wattage and amperage o The 8 in 1 solar combiner can be utilized with both 12 and 24 volt systems Caution 1.