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without jumper configuration
Overload protection: Yes
level 4IEC(EN)61000-4-3(RS)
Series impedance characteristics of the line Ro ：10 Ohm
Opto-isolated: Isolation voltage 2500Vrms 500DC continuous dedicated DC/DC module
UOTEK UT-1304H RS-485 to 4 Ports RS-485/422 Hub Port-Powered RS-232 to RS-485/422 Converters without jumper configurationStandards: RS 485 422 EIA TIA Interface: RS 485 422 terminal block Transmission media: twisted pair or shielded cable Working mode: asynchronous, half duplex or full duplex LEDs for indicating PWR, TXD, RXD, and E1 E4 activity Isolation: isolated voltage 2,500VRMS 500VDC, DC DC isolated module Baudrate: 300bps 115. 2Kbps Operating voltage: DC9 48V 220VAC Rated power: 1W Protection level: RS 485 422 provides with 8 20s 3,000A lightning surge protection
