Serial Cable RS-232 D-Sub 9 female to female null modem DeLOCK 87516

The DeLOCK Serial Cable RS-232 D-Sub 9 female to female null modem (model 87516) is a 5 m, 5 mm diameter cable designed for direct RS-232 device-to-device connections. It provides a compact Mini D-Sub 9 female connector on each end and supports full handshake signals including RTS/CTS and DTR/DSR. The cable also allows optional power supply via the RI line and is intended for reliable serial communication between devices with DB-9 ports.

Advantages

The cable implements full handshaking (RTS/CTS and DTR/DSR) for controlled, reliable data flow and reduced transmission errors. Mini D-Sub 9 female connectors are compact, allowing adjacent RS-232 ports to be used without interference. With a 5 m length and robust construction, the cable is suitable for installations requiring some distance between devices while remaining flexible and easy to route.

Suitable for

• Connecting two RS-232 devices directly using DB-9 ports
• Null modem applications where transmit and receive lines are crossed
• Serial communication setups requiring hardware flow control (RTS/CTS, DTR/DSR)
• Situations where optional power via the RI line is needed

Key specifications

• Brand: DELOCK
• Model / MPN: 87516
• EAN: 4043619875160
• Connector: Mini D-Sub 9 female to female (DB-9)
• Cable length: 5 m
• Cable diameter: 5 mm
• Type: Null modem (full handshake)
• Flow control: RTS/CTS, DTR/DSR
• Color: Black

How to use

Connect each Mini D-Sub 9 female connector to the DB-9 serial port of the corresponding devices. Ensure the devices are configured for null modem communication and hardware flow control if required. If a device needs power via the RI line, enable the corresponding option on the supplying device according to its documentation. Route the cable to avoid sharp bends and mechanical stress.

Recommendations

For stable communication, confirm both devices support hardware flow control and null modem wiring. Avoid routing the cable near strong electromagnetic interference sources and secure connectors to prevent accidental disconnection.