Product introduction

ADM-2721 is an isolated RS-232 to RS-422/485 bidirectional converter. It can extend RS-232 transmission distance and improve network performance.

The design features of industrial application, DIN-rail installation, photoelectric isolation protection, DC24V power supply, are suitable for industrial environment.

Your RS-232 device can easily access the industrial RS-422/485 network and do not need to do any hardware and software changes.

Product specification

Model: ADM-2721

Functions: RS-232 to RS-485/422 Converter

Up Interface: 1-Port RS-232 (3 wire TXD,RXD,GND)

Down Interface: 1-Port RS-485/422

Isolation voltage: Isolation voltage 3000V，600W Surge protection

RS-232 Trans distance: 10 meters (Max)

RS-485 Trans distance: 1000 meters (Max)

Data rate: 300 to 115200 Bps

Interface protection: 15KV ESD Protection

RS-485 load capacity: 256 nodes (Max)

Power supply: 9 to 48VDC, 50mA @24V

Operation mode: Full duplex / half duplex, automatic flow direction

Working temperature: -20 ~75℃

Storage temperature: -20 ~85 ℃

Working humidity: 5 ~ 90% RH

Shape size: (L x W x H) 103x72x27mm

Interface definition