5V Wifi Relay Module Switch Board For Arduino Remote Control 37 * 25mm
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                                            5V Esp-01S Esp8266 Wifi Module Remote Control Switch Relay Module Description: 1.Product size: 37 * 25mm. 2.Operating voltage: DC5V. 3.Communication: WIFI (ESP8266 module). 4. Transmission distance: the maximum transmission distance of 400m (open ......                                         
                                            Oky Newstar Technology Co., Ltd
                                         
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