ESP32 4 Channel  Relay Board (ESP32R4) 
  
 
  
    
  Available from:
      
      
    Aliexpress.com
    
    Rocketcontroller.com
    
    
    
    
    
    
    
    
      
  Manufacturer:
      
      
      Robotdyn.com
      
    
    
    
      Install method:
    
    
      
      Tasmota pre-installed
      
    
    
    
| GPIO # | Component | 
|---|---|
| GPIO00 | None | 
| GPIO01 | None | 
| GPIO02 | User | 
| GPIO03 | None | 
| GPIO04 | User | 
| GPIO05 | User | 
| GPIO09 | None | 
| GPIO10 | None | 
| GPIO12 | User | 
| GPIO13 | User | 
| GPIO14 | User | 
| GPIO15 | User | 
| GPIO16 | User | 
| GPIO17 | User | 
| GPIO18 | User | 
| GPIO19 | User | 
| GPIO20 | None | 
| GPIO21 | None | 
| GPIO22 | None | 
| GPIO23 | User | 
| GPIO24 | None | 
| GPIO25 | Relay 1 | 
| GPIO26 | Relay 2 | 
| GPIO27 | None | 
| GPIO6 | None | 
| GPIO7 | None | 
| GPIO8 | None | 
| GPIO11 | None | 
| GPIO32 | Relay 4 | 
| GPIO33 | Relay 3 | 
| GPIO34 | Button 1 | 
| GPIO35 | Button 2 | 
| GPIO36 | Button 3 | 
| GPIO37 | None | 
| GPIO38 | None | 
| GPIO39 | Button 4 | 
Configuration for ESP32
  
{"NAME":"RobotDyn ESP32R4","GPIO":[0,0,1,0,1,1,0,0,1,1,1,1,1,1,1,1,0,0,0,1,0,224,225,0,0,0,0,0,227,226,32,33,34,0,0,35],"FLAG":0,"BASE":2}
  
  
  
  This device comes with Tasmota already installed!
  
  
				
Additionally see the asociated expansion module https://rocketcontroller.com/product/relays-expansion-module-8-relays-for-esp32r4-controller/ where maximum of 3 devices can be controlled by Tasmota.