Product introduction
ADM-2740 is an isolated RS-232 to 2-Port RS-485 Hub. It can extend RS-232 transmission distance and RS-232 is divided into two RS-485 signals to improve driving ability. The design features of industrial application, DIN-rail installation, photoelectric isolation protection, DC24V power supply, are suitable for industrial environment. RS-232 device can easily access the industrial RS-485 network and do not need to do any hardware and software changes.

Product specification

Model:                              ADM-2740
Functions:             RS-232 to 2-Port RS-485 Hub
Up Interface:              1-Port RS-232 (3 wire)
Down Interface:              2-Port RS-485
Isolation voltage:  Isolation voltage 1.5KV ，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:         32 nodes (Max)
Power supply:            9 to 48VDC, 50mA @24V
Operation mode:     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