Industrial Class Photoelectric Isolation RS-232 TO RS-485/422
Part number: ATC-107
In Stock : Available

ATC-107 Isolation Interface Converter is compatible with RS-232C, RS-422, RS-485 standards and capable of converting single end RS-232 signal into RS-422 or RS-485 signal of balanced signal. The built in photoelectric isolator can offer 3500V isolation voltage and the rapid Transient Voltage Suppressor (TVS) can effectively inhibit lightning and ESD, prevent lightning strike and common code interference.

Connect PC, IPC, or portable computer via a DB9 female connector at RS-232 interface, and connect RS-422, RS-485 end via convenient 4-bit terminal. The RS-485 supports dual-line half duplex. The inner circuit of ATC-105 Photoelectric Isolation Interface Converter can detect data direction and switch to control it automatically, conveniently to form a RS-485 network without any shake hand signal. This kind of RS-485 control is fully transparent and need no software amendment for the former working modes basing on RS-232.

ATC-107 Photoelectric Isolation Interface Converter can provide credible connection for point to point, point to multi-point communication. The point to multi-point allows connecting 32 RS-422 or RS-485 interface devices with data transmission speed of 0-115.2KBPS. The dual color data flow indication light can indicate malfunction. It supports communication modes including RS-232C to RS-422, RS-232 to RS-485 conversion.

  • Point to point, point to multi-point communication
  • Industrial distribution system, industrial control automation
  • Road traffic control automation
  • Closed circuit monitoring
  • Security protection system
  • Intelligent card, check on work attendance gate safety system

Technical Parameters


Compatible with the EIA/TIA RS-232-C , RS-485/RS-422 standard

Working Mode

Asynchronous half or full duplex

Transmission Media

Twisted-pair cable or shielded cable

Baud Rate


Transmission Distance

0-5 km



DB25 Female


4-pin terminals block or RJ11 phone socket


3500VRMS 500VDC sequence

Protecting Grade

RS-232 interface 600W lightning strike and surge protection 

RS-422/RS-485 interface 1000W lightning strike and surge protection on each line

Power Supply Parameters

Power Supply

RS-232 is electric larceny serial

RS-422/485 is power converter

Signal Indication

2 signal indication lights indicate TXD RXD

Physical Characteristics


Plastic shell





Working Environment -20℃ to 70℃, 5% to 95%
Standards and Certifications RoHS, CE, FCC


Company products are widely used with the electric power, industrial control, telecommunications, commerce, banking, insurance, security, smart CARDS, and other industries, production and sales of the products of the company, supporting complete, cost-effective, timely and thoughtful service.ATC - 107 is a photoelectric isolation belt power of RS - 232 turn RS422 / RS485 converter, can improve the quality of communication and better stability, prevent outside interference.ATC - 107 is widely used in industrial distribution of industrial and distribution systems, industrial control automation, road traffic control automation, CCTV security system, smart CARDS, entrance guard system of check on work attendance.

ATC-107 1PCS
ATC-107 Instructions Book 1PCS