welcome to my store. Hope you have a pleasant shopping trip! Features: 1.It supports overvoltage protection and overcurrent protection. 2.This module uses SMD components to ensure better signal transmission except for the connector pins,so as to improve the EMC and other characteristics of the system,so that the module can be used in more and harsher environments as much as possible. 3.It has a power supply,transceiver indicator,and you can see the working status of the module through the indicator. 4.It reserves 2.54 pitch welding holes for easy welding. Specifications: Input Voltage:DC 3.3V Clip:SP3490 Work Temperature:-25?~85? Work Humidity:5%~95%RH Size:50.7*26.9*10mm Package List: 1pcs TTL Mutual Conversion RS422 Module Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow 1-2cm slight dimension difference due to different manual measurement.

Guarantee: Any Questions Or Concerns, Please Feel Free to Contact Us so We Can Do Our Best to Solve It. We Will Strive to Provide the Highest Quality Service For You. Module 5P Terminal Side:R+/A:The A Pin of This Module Needs to Be Connected to the T+/Y Pin of Other 422 Modules;R-/B:The B Pin of This Module Needs to Be Connected to the T-/Z Pins of Other 422 Modules;T-/Z:The Z Pin of This Module Needs to Be Connected to the R-/B Pin of Other 422 Modules;T+/Y:The Y Pin of This Module Needs to Be Connected to the R+/A Pin of Other 422 Modules;GND:The Ground Wire of This Module. Module 4P Terminal Side:VCC:3.3V;TXD:The TTL (UART) Transmission of This Module Is Connected to the RXD Receiving Pin of the Microcontroller;RXD:The TTL (UART) Receiving of This Module Is Connected to the TXD Sending Pin of the Microcontroller;GND:The Ground Wire of This Module (this Ground Wire Must Be Connected to the Ground of the Microcontroller System). It Supports Overvoltage Protection and Overcurrent Protection.This Module Uses SMD Components to Ensure Better Signal Transmission Except For the Connector Pins,so as to Improve the EMC and Other Characteristics of the System,so that the Module Can Be Used in more and Harsher Environments as Much as Possible.It Has A Power Supply,transceiver Indicator,and You Can See the Working Status of the Module Through the Indicator.It Reserves 2.54 Pitch Welding Holes For Easy Welding. It Is A TTL Mutual Conversion RS422 Module.This Module Is Suitable For 3.3V TTL and RS422 Signal Interconversion,with Overvoltage and Overcurrent Protection Circuit to Protect RS422 Level Signal in Real Time,to Ensure the Normal Operation of SP3490 Chip.