Code lockers are used for security purposes and it is of many types based on their complexity and level of security they provide.
													
																	Simple door lock circuit. 
									
	
		
	
																	A simple electromagnetic locking system using products by schlage electronics might include. 
																	1 each bps 24 1 power supply. 
																	Best for window sliding door bedroom. 
																	This type of circuit breaker is used to protect high current circuits such as power door locks power windows air conditioning etc. 
															
													
									
	
		
	
																	1 each ps902 power supply. 
																	It is capable of providing good level of security for the user. 
																	1 each 621rd ex da exit pushbutton. 
																	The above tx is a simple rc based two transistor oscillator which may be applied as the tx remote handset for the proposed ir door lock circuit. 
															
													
									
	
		
	
																	1 each 653 05 key switch. 
																	1 16 of over 5 000 results for simple door latch. 
																	The automatically resetting circuit breaker contains a bimetal strip. 
																	Black 4 6 out of 5 stars 394. 
															
													
									
	
		
	
																	A simple electromagnetic locking system by securitron might consist of. 
																	Free shipping on your first order shipped by amazon. 
																	This feature can be used to actuate a door lock or a latch to lock and unlock a door. 
																	It only requires minimal components and easy to build. 
															
													
									
	
		
	
																	1 each m62 electromagnetic lock. 
																	1 each m490 electromagnetic lock. 
																	Position 0 1 5 ms pulse is middle 90 2ms pulse is all the way to the right and 90 1 ms pulse is all the way to the left. 
																	Here we are going to see building of simple code locker circuit using decade counter ic cd4017.