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Design and construction of anti-theft system via phone - 2

Figure 1.1. Overview diagram of a warning system. 3 Figure 1.2. Protection area of ​​body temperature sensor 4 Figure 1.3. Some commonly used sensors today 6 Figure 1.4. Geographical structure of GSM 11 network Figure 1.5. GSM system model. 12 Figure 1.6. Structure of BSS base station. 14 ...

Mater Device Sends Start Condition To All Slaves.

Specifications  Power supply: 5VDC.  Detection distance: 3 - 80cm.  Output current: 300mA.  The open collector NPN output helps to customize the output voltage, the higher the resistance, the higher the output voltage.  Has red LED display.  Size: 1.8cm (L) x 7.0cm (L).  ...

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