ESP-01S 5V Relay Module V1.0  Relay Board (ESP-01S-Relay-v1.0) 
  
 
  
    
  Available from:
      
      
    Amazon.com
    
    Aliexpress.com
    
    Banggood.com
    
    
    
    
    
    
      
  Manufacturer:
      
      
      Github.com
      
    
    
    
      Install method:
    
    
      
      USB to Serial
      
    
    
    
| GPIO # | Component | 
|---|---|
| GPIO00 | Relay1i | 
| GPIO01 | Led1 | 
| GPIO02 | User | 
| GPIO03 | User | 
| GPIO04 | None | 
| GPIO05 | None | 
| GPIO09 | None | 
| GPIO10 | None | 
| GPIO12 | None | 
| GPIO13 | None | 
| GPIO14 | None | 
| GPIO15 | None | 
| GPIO16 | None | 
| FLAG | None | 
Configuration (old format, will be converted to new template when applied)
  
  {"NAME":"ESP-01S Relay","GPIO":[29,52,255,255,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":18}How to flash ESP-01(S)

Alternative config (normally open):
'{"NAME":"ESP-01S Relay","GPIO":[224,288,1,1,0,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":18}'