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LIST OF FIGURES
Figure TITLE Page No.
Figure 3.1 Block diagram 16
Figure 3.2 Encoder HT 12E 26
Figure 3.3 Address and Data of Micro Controller 27
Figure 3.4 Transmission Timing for the HT12E 28
Figure 4.1 433 MHz Transmitter 29
Figure 4.2 433 MHz RF Receiver 30
Figure 4.3 HT12D Controller 31
Figure 4.4 HT12D Pin Diagram 32
Figure 4.5 PIC16F73 Block Diagram 33
Figure 4.6 Working of relay 36
Figure 5.1 Unregulated power supply 38
Figure 5.2 Regulated power supply 38
Figure 5.3 ic-7809 as a regulator 38
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