♥Introduction: USB to GSM is a four-frequency GSM/GPRS module, its stable performance, compact appearance, can meet a variety of customer needs. Integrated USB to serial port chip, directly plug in the computer can be debugging. The operating frequency of SIM800C is GSM/GPRS 850/900/1800/1900mhz, which can be used worldwide. It can realize the transmission of voice, SMS messages, and data information with low power consumption, and can be suitable for various compact product design requirements.

♥Product parameters:

1. Onboard the original SIM800C GSM/GPRS module;

2. Onboard CH340T USB to serial port chip, easy to install and high compatibility;

3. Self-elastic SIM card slot design can use 2G/3G/4G Micro SIM and Nano cards;

4. When the module is powered on, it will automatically start up and connect to the network, without the need for buttons to control the startup,

5. Support SMS sending and receiving, and provide management software;

6. Support GPRS data transmission under a 2G network, which can be used in mobile meter reading and other occasions; 7. Support Bluetooth data transmission, IEEE802.15 Bluetooth standard, 2.4GHz working frequency band;

8. Support adaptive baud rate;

9. It has a working indicator, no network, no SIM card, or when the SIM card is inserted backward, the LED light flashes quickly at intervals of 1 second, and it flashes once every 3 seconds when it is connected to the network normally.
♥Instructions for use

①Connect the 2.4GHz GSM antenna to the module and insert the SIM card (Note: Support Micro/Nano card,）. When using it for the first time, you need to install the serial port driver of CH340.

②After the module is started, the indicator light flashes once every 1 second in the beginning, and after a period of initialization, the indicator light flashes once every 3 seconds, and the module starts to work normally.