
| 
 Numbers            
 | 
 Description            
 | 
|---|---|
| 
 1            
 | 
 LED showing power-up of module.            
 | 
| 
 2            
 | 
 Screw terminal block for supply voltage wiring.            
 | 
| 
 3            
 | 
 Identification label for the wire terminals.            
 | 
| 
 4            
 | 
 Wings for fixing the module.            
 |