The keyless door is an electronic circuit based device. It works on the entry number. The authenticated person has to enter the unique code using the keypad. You can install a keyless entry system in your house as well as in buildings and offices. With this system, you will never be in the tension of leaving the sensitive areas out of your supervision.
The main and very basic need of security was fulfilled by using the mechanical or electrical locks which are very heavy and designed for only one key. Therefore a large number of locks required for locking large industries there are many keys for different locks.
The system has a Keypad by which the password can be entered through it. When entered password matches with the password stored in the memory then the relay gets on and so that the door is opened. This function thwarts any attempt by ‘hackers’ to quickly try a large number of codes in a sequence. Working is very simple. Simply enter the code, if the code matches the code i.e. stored in its database the door will unlock for a limited time. At the end of the preset delay, the relay reenergizes and the door gets locked again.LCD represents the status of the door and the password.