RS-232 f/o transceiver, port powered, multimode 850nm ST
Multi power transceiver: Voltage: Data line with test function, USB cable or external 5V DC...12V DC. D-Sub 9pin socket, max. distance: Up to 5km. Transfer rate: 300 bps up to max. 115.2 kbps, CE Class B, FCC Class B, dimensions 42x80x22mm, operating temperature 0..60°C.