Security System Using LDR
  
  
  
  
  
  
  
  
    
      
      
      
      
        
          
            
              
                
                  
  
    
      
      
      
      
    
  
  
      
      
  
                  
                  
                    
                      
                        
                        
        
                        
                            
                            
                            
                            
                              
                                
                                  
                                
                              
                            
                            
  
  
 
  
      
        
      
      
  
  
  
						
                         
                        
						
          
            
          
                      
                      	                 
                      	
                      			
 
This prototype model can be placed at dark places where the entry of any person is prohibited. This Electronic Security System Using LDR Circuit is made of high-quality material. This is the product for you if you enjoy being scared every day of your life.
                      		
                    	
                      
                    
     
                   
                    
                  
                
              
  
            
        
          
        
        
            
 
               
        
		
        
		
  		      
       
      
      
      
    
  
  
  
 
    
    
   
Security System Using LDR
            Available:In Stock
- Product SKU: LGBK010
 
          
          ₹ 199
   
                          
                          
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          Specification
Description
This Security System Using LDR Circuit is based on the operational amplifier IC 741, which is acting here as a comparator. As the light falls on the LDR R3, its resistance decreases, and the voltage at the V+ terminal of the opamp increases, as soon as it becomes more than V- set by the potentiometer R5, the output becomes high. Consequently, the buzzer and LED get turned on.This prototype model can be placed at dark places where the entry of any person is prohibited. This Electronic Security System Using LDR Circuit is made of high-quality material. This is the product for you if you enjoy being scared every day of your life.
Circuit Diagram

Physical Attributes
- Dimensions (cm) L x W x H : 15 x 12 x 5
 - Weight (gm): 50