USB to serial chip: CP2102Working temperature: -20~70?Dimensions: 50.2*25.5*10.2mmType C USB interface with complete voltage regulator, ESD protection, short circuit, circuit protection, RF shielding and other protection measures. Integrated CP2102 USB to serial port chip, convenient for program download and debugging information printing.It is the best choice for smart city, farm, home, industrial control, house security, wireless meter reading and IoT developers. Package: 1PCS