Soyal AR-701CM
Interface : RS-232 to RS-485
Power Supply : 9-16 VDC
Baud Rate : 4800 bps – 11500 bps
Power Consumption : 1 W
Temperature : -20℃ to +75℃
Active Distance : 2m ( RS-232 )/300m ( RS-485 )
Optical Isolation : 8KV ESD
Protocol : 2KV
Dimension (mm ) : 64 ( L )X55 ( W )X16 ( H )
Weight ( g ) : 40
Soyal AR-321CM
Interface : USB to RS-485
Power Supply : 5 VDC ( Only )
Baud Rate : 4800 bps – 11500 bps
Power Consumption : 1 W
Temperature : -20℃ to +75℃
Active Distance : 300m ( RS-485 )
Optical Isolation : 3 KV
Electrical Isolation : 2500 VRMS
Dimension (mm ) : 79 ( L )X37 ( W )X16.4 ( H )
Weight ( g ) : 50
– See more at: http://www.keycardthai.com/soyal-ar-321cm/#sthash.l68UawRL.dpuf