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To use this module
Color Matching
Free-Fall Detection
But this is not the case with Solid State relay which uses photocoupling for switching on and off the load
Care should be taken not to use it for application requiring more than 100 mA of current
GSM/GPRS/3G Built In Circuit Board Antenna NTC Thermistor To use this moduleGSM or GPRS or 3G employ a wide range of frequencies ranging from 800MHz to 2100MHz but packaging restrictions and size allowances does not allow a big antenna to be packaged inside the module and hence we have to use the PCB antennas which are also known as microstrip antennas to connect to the network. They are usually printed on PCBs small enough to fit inside the module and connected to transmitter and receiver with thin wires. To transmit the
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