HW-523B A160 16 Way 5V Relay Module Control Board Optocoupler Protection Memory Module Cards
                                         
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                                            HW-523B Module Photosensitive resistance relay control module HW-523B #detail_decorate_root .magic-0{border-bottom-style:solid;border-bottom-color:#53647a;font-family:Roboto;font-size:24px;color:#......                                         
                                        
                                            Shenzhen Kaigeng Technology Co., Ltd.
                                         
                                        
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