BB-485SD9TB - Serial Converter, RS-232 DB9 F to RS-485 2W TB, Port Powered
The BB-485SD9TB Port-powered, 2-channel converter changes RS232 TD and RD to RS485 for longer distance and multidrop function. Automatic Send Data Control enables driver when data is present on RS232 side. Powered from RS232 data and handshake lines (high or low). External power optional – PS sold separately.