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RS232C and RS422 Bi-directional Interface Converter Powered by interface. Maintains high impedance when power is off. Asynchronous. Half or full duplex mode. Thermal shutdown protection.

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RS232C and RS485 Bi-directional Interface Converter Powered by interface. Maintains high impedance when power is off. Asynchronous. Half or full duplex mode. Thermal shutdown protection.

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RS232C and RS422/485 Bi-directional Interface Converter - Powered by either a DC-9V/200 mA power adaptor (included) or a RS232 9-pin connector
- Data Rate: up to 1 Mbps under 4000 ft (1.2 Km)
- DB-25 Female on the RS232 side
- A terminal block and RJ-11 on the RS422/485 side
- RJ-11 connector provides an extra monitoring function

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