Features 1、The USB to GSM serial port module is easy to use and operate. Directly plug in the computer to debug. 2、Can realize the transmission of voice, SMS information and data information with low power consumption, and can be suitable for various compact product design requirements. 3、The module has good contact performance, which can ensure stable working. 4、The module is small in size and light in weight, which makes it portable and easy to carry. 5、High quality material can make sure the durability and stability of the product. Specification Item Type: USB To GSM Serial Port Module Material: PCB Working Voltage: DC 5V Purpose: Can Realize The Transmission Of Voice, SMS Information And Data Information With Low Power Consumption, And Can Be Suitable For Various Compact Product Design Requirements Package List 1 x Module