Some resources to help you getting started with STM32 programming.
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GSM Based Home Security System adopts voice dial of GSM network to send control command and receive alarm distantly. When a signal is perceived by detectors, the detectors will send an alarm signal to system right away. The system then sends alarm to its pre-set mobile phone numbers, and temporarily dials the pre-set telephone/mobile phone numbers spontaneously.
GSM Based Home Security System is used to watch the area as well as the property using GSM cellular technology.
The main objective of GSM Based Home Security is to alert the owner by the phone or cell phone.
In This System we are Proving DOOR Switch Magnetic latch based, When the DOOR Opens this will give signal to Automation Then GSM Modem Dials to 5 Mobile No stored in the memory one by one. Instead of Magnetic latch, you can connect other sensors like Gas Sensor, Motion Detectors, etc.
Note: The images are just for reference, and the item layout keeps on varying. In the latest version, the battery is detachable and easily replaceable, as the soldered batteries are easily damaged. Also they have put a JST connector for the battery. The product does not comes with any buttons, sensors, etc. You have to purchase the sensors as per your requirement. Comes only with the GSM unit and the battery. Also in the latest version, the manufacturer has moved from SIMCOM chip to Neoway M660A GSM chip.