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This DTMF based home security system keeps your home secured against any unauthorised intrusion.
Learning from this project
Security is a prime concern in our day to day life. The DTMF based security system presented here is an access control that allows, only an authorized person to access a restricted area. This system is suitable for corporate offices, ATMs and home security among other applications.
The system comprises a small electronic unit with a mobile keypad which is outside the entry door to control a solenoid-operated lock with help of a D.C. motor. When an authorized person enters the predetermined password via the hand held mobile keypad from some other place, the stepper motor is operated for a limited time to unlatch the solenoid operated lock so the door can be opened. At the end of the preset delay, the stepper is operated in the reverse direction and door is locked again.
By: HBeonLabs Technology Pvt. ltd., Product assembled by HBeonLabs