In the age of wireless communication, it is very important to have robust and reliable controlling technology to handle the needs of future. Wireless control can be set up in many ways like radio frequency communication, Infrared Communication etc. This book summarizes the feasibility study of DTMF (Dual Tone multi-frequency) Technology to control the remote devices such as a Ground Combat Vehicle, Industrial Load, Anti theft systems, toy application and display dialed numbers on phone. Also, this book gives comparison between conventional communication technique that is RF communication and communication by using DTMF technology. It includes detailed analysis of six projects based on DTMF controlling mechanism along with their block diagrams, circuit diagrams, schematic diagrams, PCB designs, Simulations of all projects, full working codes in assembly language and algorithms.