DX-LR02-433T22    
    
                Module size: 19 × 16.5 × 2.4mm            
        
               Chip model: ASR6601 SOC chip            
        
              Hardware interface: LPUART            
        
                Receive sensitivity: -138dbm            
        
                Operating frequency band:433-475MHz            
        
               Reference distance: an open visual distance 8km, the city distance 3.8km            
        












 
         
        
         
  
  
  
  
  
  
  
  
    