3pcs RS232 to TTL Serial Port Converter Module DB9 Connector MAX3232 Serial Module

Feature: ? It is widely used in radio modification, phone flash, GPS, vehicle detection, DVD flash, hard disk repair set-top box upgrade It can be used to program STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU Communication Port: TX RX VCC GND ? Package includes: ? 3 x Serial Module