Q1.

Why should we use the solar products? How can using these types of products help us to save electricity, and other types of costs such as connecting and maintenance costs?

Ａ1

The solar power supplied by the rays of the sun is an inexhaustible natural resource able to meet more than 6000 times what mankind consumes at the present time. Not only do we do not need to use up our earth’s precious resources when we use solar energy to generate electricity but the process produces no C02 emissions, no air pollution, no noise polluting and the scope of practical applications is truly extensive. It can be said that solar energy is today’s most promising contribution to environmental protection and a greener world. Apart from helping to reduce environmental pollution and lowering the amount of greenhouse gases produced, we are sure that you will be able to save a sizeable amount on electricity fees and installation fees.

Below we give a detailed breakdown of one example. We analyze exhaustively the advantages that the use of Maki Ground light SH-170 products can bring in terms of electrical net cost, environmental net cost, installation and maintenance costs and long-term effects. The benefits to you and the environment are abundantly:

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Q2.

Within what temperature range do solar products operate effectively? Will the cold of winter or the heat of summer have an impact on device efficiency?

Ａ2

The normal temperature range in most parts of the world is, generally speaking, within the range at which solar cell can be used, that is -20~70℃. At that temperature, the coefficient for time of effectiveness is approximately -0.38％/℃~ -0.4％/℃. The rechargeable battery operating temperature is -20~65℃, and the storage temperature is from -25~80℃. Consequently although the operating temperature may vary, there is only a slight influence on the solar product. On the whole solar products are suitable for use in most places in the world.

Q3

Are solar products suitable for indoor use? Do ordinary interior light sources offer enough energy to generate power for the solar device to work?

A3

Lamp light is an artificial illumination source with a different wavelength from that of sunlight's more complete wavelength, therefore when solar batteries designed for outdoor use are placed under fluorescent lamps they operate less effectively. However under incandescent light sources, the effectiveness is dependent on the distance from the light source. It can vary from 100% to 5% of power. The wavelengths of fluorescent and incandescent light bulbs are not the same. Generally speaking the intensity of light from fluorescent tubes is so low that it may not be able to supply enough power to charge the solar battery. Other types of inside lights are constrained by the distance from the light source making it more difficult to obtain enough energy to completely charge up the solar products and allow them to operate. Therefore although most ordinary interior illumination can offer a little electrical energy to supply solar power to use, on the whole for optimal device productiveness we recommend that solar powered products be used outside.

Q4

Can solar products be safely installed as decorative light sources in water? Will the efficiency of the light be affected by the depth of the water?

A4

Basically since our solar products are designed for use in overcast and rainy weather conditions they are water resistant. This is especially true of our Ground Lights and Bricks which as noted elsewhere have received IP68 International Certification. This means that with regard to water resistance these two types of products as decorative underwater lighting. It should be remembered however that the water affects the penetration of the sun's rays which power the solar device. The solar cell may not be able to absorb enough energy and may have an influence on product effectiveness Experimental testing indicates that placing a panel about 15 cm below the surface will reduce its effectiveness by about 30%.Consequently although our products are water resistant, they are not really suitable for decorative underwater lighting. We recommend that if you need to install Ground Lights or Bricks in water that the water depth should be less than 20 cm in order to preserve optimal efficiency.