It is a device that converts direct current into alternating current. Since the solar cell and the battery are DC power supplies, and the load is an AC load, the inverter is indispensable. Inverter can be divided into independent running inverter and grid-connected inverter according to the operation mode. The independently operated inverter is used in a stand-alone solar cell power generation system to supply independent loads. Grid-connected inverters are used in solar cell power generation systems that operate in parallel. The inverter can be divided into a square wave inverter and a sine wave inverter according to the output waveform. The square wave inverter circuit is simple, low in cost, but has a large harmonic component, and is generally used in systems below several hundred watts and with low harmonic requirements. Sinusoidal inverters are costly, but can be applied to a variety of loads. Exit Sign,Exit Light,Exit Signage,Exit Sign With Lights NINGBO WIKI IMPORT EXPORT CO., LTD. , https://www.feituosafety.com