DB9 9‑Pin RS232 Crossover Serial Cable Why you need it Provides a reliable serial connection for equipment that uses standard 9‑pin RS232 ports. Ideal when you need a stable, low‑latency link over short or long distances. Solves signal degradation and interference issues with solid construction and shielding so devices communicate consistently. Flexible connector and length options let you match the cable to your device layout without adapters or makeshift wiring. Key features and benefits Function: DB9 9‑pin RS232 crossover (crossover/null‑modem) data cable for direct serial communication between two RS232 devices. Multiple lengths: Available in 11 lengths from 0.5 m to 30 m — choose the exact length you need to avoid excess cable or signal loss. Connector options: Three interface configurations — male‑to‑male, female‑to‑female, and male‑to‑female — to fit different device port combinations. Corrosion resistance: Gold‑plated pins resist oxidation and corrosion for reliable long‑term contact. Durable shielding and protection: Metal shell provides mechanical protection; double‑layer shielding reduces electromagnetic interference (EMI) for stable transmission. Conductor specification: 28 AWG wiring for consistent signal integrity and durability. Performance: Built for stable, high‑speed serial transmission over RS232 links without unexpected dropouts. Compatibility Designed for standard DB9 (9‑pin) RS232 serial ports. Works with equipment that uses RS232 communication signals and a DB9 interface. Typical applications Industrial equipment: Connect PLCs, CNC controllers, sensors, or data acquisition modules on the factory floor where durability and long cable runs are required. Network and IT maintenance: Access serial consoles on routers, switches, servers, and other network gear for configuration and troubleshooting. Point‑of‑sale and peripherals: Link POS terminals, barcode scanners, receipt printers, and legacy peripherals that require RS232 serial connections. Ordering tips Measure the distance between devices and select one of the 11 available lengths (0.5 m to 30 m) to minimize excess cable. Confirm port genders on your devices and choose male‑to‑male, female‑to‑female, or male‑to‑female accordingly. Specifications (summary) Type: DB9 9‑pin RS232 crossover data cable Lengths: 0.5 m to 30 m (11 options) Connector types: Male‑to‑male, Female‑to‑female, Male‑to‑female Pins: Gold‑plated Shell: Metal protective shell Wire gauge: 28 AWG Shielding: Double‑layer shielding Function: Stable, high‑speed RS232 serial transmission