RS485 CONTROL BMS CABLE R1189

Product Description

The R1189 RS485 Control Cable is a high-quality shielded twisted pair communication cable designed for RS485/Modbus/BMS (Building Management System) and industrial automation networks. It ensures stable, noise-resistant data transmission over long distances in electrically noisy environments such as factories, HVAC systems, and control panels.

It is commonly used for PLC communication, energy meters, VFD systems, SCADA, and smart building automation.

Key Features

• Designed for RS485 / Modbus / BACnet / BMS communication systems
• Single twisted pair with 120Ω characteristic impedance
• High noise immunity with overall foil + braid shielding
• Low-capacitance design for stable long-distance data transmission
• Supports long communication distance up to 1200 meters (RS485 standard)
• Suitable for multi-node networks (up to 32 devices per bus, typical RS485 limit)
• PE insulated conductors for better signal integrity
• PVC outer sheath for industrial durability
• Strong EMI/RFI protection for harsh environments
• Reliable performance in continuous 24/7 automation systems

Specifications

• Product Type: RS485 / BMS Communication Cable
• Model: R1189
• Conductor: 1 Pair (2 Core) × 24 AWG stranded tinned copper
• Conductor Structure: 7-strand flexible copper
• Insulation: Polyethene (PE)
• Shielding: Aluminium/PET foil + tinned copper braid (dual shield)
• Impedance: 120 Ω
• Capacitance: ~41 pF/m (low capacitance design)
• Voltage Rating: 300V (typical control cable standard)
• Operating Temperature: -30°C to +80°C
• Outer Sheath: PVC (grey industrial grade)
• Communication Standard: RS485 / EIA-485
• Transmission Speed: Up to ~1 Mbps (depends on distance)
• Max Distance: Up to 1200 meters (RS485 standard conditions)
• Network Capacity: Up to 32 nodes per bus (typical RS485 limit)
• Application: BMS systems, HVAC controllers, energy meters, PLC networks, SCADA systems, industrial automation, smart building communication