TC35I module is Simens introduced a highly integrated dual-band 900/1800 MHz GSM module. Its compact design, low power consumption, can provide cost-effective solutions for many communications applications. It supports EGS900 and GSM1800 dual band, data transfer content to support voice, data, SMS and fax services, communications interface using RS232 (bidirectional transfer instructions and data), power supply uses a single supply voltage of 3.3 V ~ 5.5 V, applied The range includes: industrial portable computers, low-power communications equipment, remote sensing, remote information processing and communications. TC35I microcontroller circuit connection diagram as shown.
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