ix
2.2.1.2 Installation WT-9001 IP65 9
2.2.1.3 Operation of Internal Circuit 12
2.2.1.4 Block Diagram Operation 15
2.2.1.5 Application of WT-9001 IP65 16
2.2.2 Probyte 17
2.2.2.1 Company Product 18
2.2.2.2 Specifications GSM Relay 2009 18
2.2.2.3 Block Diagram Operation 19
2.2.2.4 Circuit Operation 20
2.2.2.5 Application GSM Relay 2009 21
3 METHODOLOGY 22
3.1 Hardware Development 22
3.1.1 Block Diagram Operation System 23
3.1.2 Part of Hardware 23
3.1.2.1 Adapter AC to DC 24
3.1.2.2 GSM Modem 25
3.1.2.3 Voltage Regulator 27
3.1.2.4 Max 232 Serial Level Converter 28
3.1.2.5 Microcontroller ATMega32 30
3.1.2.6 Relay Driver and E.M Lock 32
3.2 Software Development 34
3.2.1 Initializing System 34
3.2.2 Security System 35
3.2.3 GSM System 37
4 RESULT & DISCUSSION 38
4.1 General Application System 38
4.1.1 Reset System 39
4.1.2 Lock Door System 39
4.1.3 Unlock Door System 40
4.1.4 Check Status Door 41
4.2 Application Security System 41
4.2.1 Warning Alert 42
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