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Magnetic fields and current go hand-in-hand. When current flows through a wire, a magnetic field is created. This is the basic principle behind electromagnets. This is also the principle used to measure magnetic fields with a magnetometer. The direction of Earth's magnetic fields affects the flow of electrons in the sensor, and those changes in current can be measured and calculated to derive a compass heading or other useful information
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SIM800 is a complete Quad-band GSM/GPRS solution in a SMT type which can be embedded in the customer applications.SIM800 support Quad-band 850/900/1800/1900MHz, it can transmit Voice, SMS and data information with low power consumption. With tiny size of 24*24*3mm, it can fit into slim and compact demands of customer design. Featuring Bluetooth and Embedded AT, it allows total cost savings and fast time-to-market for customer applications.
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Q2406 Wavecom GSM Modem with USB for Arduino/Raspberry-Pi/Robotics The Q2406 wavecom GSM modem follows plug and play operation with on board USB interface for communication and follows standard AT command set. Advantage of using this modem will be that you can use its USB port to communicate and develop embedded applications. The modem can either be connected to PC serial port directly or to any microcontroller. It can also be used in GPRS mode to connect to internet and do many applications for data logging and control. Features of Q2406 Wavecom GSM Modem with USB: Dual Band EGSM/GPRS 900/1800 MHz. Compliant to GSM phase 2. GPRS Class 2. Output power: Class4 2W for EGSM 900. Class2 1W for GSM1800. Control via AT commands. SIM application tool kit. Supply voltage range: 3.1 to 4.5VDC. Temperature range: -20 to 55 (operational functionality). -30 to 85 (storage temperature). Dimensions: 58.3x 32.2x 3.9mm. Weight: 17g. Voice: noise suppression and echo cancellation. SMS: Text and PDU mode, Point to point (MO/MT), Cell broadcast. DATA: Transparent and non transparent CSD up to 9.6kbps, USSD,. Interfaces: RF connector, 60 pin system connector,. SIM card connector, keypad and LCD etc.. Applications of Q2406 Wavecom GSM Modem with USB: Large shopping malls, supermarkets. Professional market, large wholesalers. Large hotels, large-scale entertainment. Large agencies. Transport, logistics industry. Large enterprises, and institutions. Large hospitals, large bookstore. Newspaper, television and radio stations. Oil Company (other chain business model). Government agencies or large township. These are used in different robotics applications. GSM based Electrical/Electronic project.