1、Stable performance, small size and high cost performance, it can meet the various needs of customers. 2、Integrated USB to serial port chip, you can directly plug into the computer for debugging. 3、SIM800C runs on GSM / GPRS 850/900/1800 / 1900MHz and supports worldwide use. 4、It can transmit voice, short message and data information with low power consumption, and can be applied to different design requirements of many small products. 5、The achievable function sms send and receive, provide management software, convenient for sending and receiving sms Features: 1. Stable performance, small size and high cost performance, it can meet the various needs of customers. 2. Integrated USB to serial port chip, you can directly plug into the computer for debugging. 3. SIM800C runs on GSM / GPRS 850/900/1800 / 1900MHz and supports worldwide use. 4. It can transmit voice, short message and data information with low power consumption, and can be applied to different design requirements of many small products. 5. The achievable function sms send and receive, provide management software, convenient for sending and receiving sms 6. Support phone function, one instruction can get ATD10086 7. Support GPRS transmission data, suitable for small amount of data transmission for industrial purposes, such as wireless meter reading, weather monitoring, etc. 8. Compatible with Bluetooth transmission data, compatible with Bluetooth standard is IEEE802.15, working in 2.4GHz frequency band, can be used for file transmission and data transmission with other compatible with Bluetooth devices. 9. Support TTS voice synthesis, send text to the device during the call, the device converts the text into voice and outputs it to the mobile phone Specification: Condition: Brand new Product Code: LC-GSM-SIM800C Working Voltage: DC 5V Operating Temperature range: -20℃-85℃ Operating Humidity Range: 0%-95%RH Size: Approx. 27 x 50.7mm / 1.1 x 2.0in Antenna Size: Approx. 50 x 17 x 11mm / 2 x 0.7 x 0.4in Package List: 1 x USB to GSM Module 1 x Antenna 1 x USB to GSM Module 1 x Antenna