Usikalu, M.R. and Adedayo, K.D and Adekola, A.S and Arogunjo, A.M
The Design and Construction of an Infrared Activated
Security System at 9 KHz Frequency.
Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS, 2 (2).
ISSN ISSN: 2141-7016
This paper reports the design and construction of a security system. The system will produce sound of a barking
dog at audible frequency of 9 KHz. The design procedure and principle of operation of the various modules as
presented in this work are based on the locally available electronic components
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