RS-232 to 485/422 Adapter Cascadable 16-32 Devices Converter for Attendance Machines FG05 Features: - RS485 passive interface converter equipped with voltage clamp protection circuit and anti-surge capability - Functions as an RS-232 to RS-485 converter and RS-232 to RS-422 converter without the need for jumper switching; automatically adapts to the connected network mode - Compatible with RS-232, RS-485, and RS-422 standards; converts single-ended RS-232 signals to balanced RS-485 or RS-422 differential signals - Suitable for use in attendance machines, IC card payment systems, industrial automation control systems, access control systems, parking systems, automated banking systems, bus toll collection systems, cafeteria sales systems, and highway toll station systems - Compact and lightweight design for easy portability and use Item Type: Adapter Interface Features: Supports EIA/TIA RS-232C, RS-485, and RS-422 standards Electrical Interface: - RS-232 interface: DB9 female connector - RS-485/RS-422 interface: DB9 male connector, connectable to a small board with routing via a six-position terminal block Transmission Medium: - RS-485: Uses one pair of twisted-pair cable (shielded recommended; characteristic impedance 120Ω recommended) - RS-422: Uses two pairs of twisted-pair cable (shielded recommended; characteristic impedance 120Ω per pair recommended) Working Mode: - RS-422: Asynchronous full-duplex - RS-485: Asynchronous half-duplex Transmission Rate: 300–115200 bps Transmission Distance: Up to approximately 800 meters (0–2625 feet) Dimensions: Approximately 55 x 35 x 15mm (2.2 x 1.4 x 0.6 inches) Operating Temperature: 0°C to 70°C Relative Humidity: 5% to 95% (non-condensing) Cascadable Support: 16–32 devices Maximum Allowable Differential Voltage Between Devices: 5.7V Package Includes: 1 x Adapter