Syston 18/8 Thermostat Cable – 50 ft, Pure Copper, CL3R/FT4/CMR, UV Resistant, UL/ETL Listed

Overview

Meet the Syston 18/8 Thermostat Cable, a durable low-voltage conductor designed for dependable performance in HVAC, doorbell, and security wiring. Constructed with solid pure copper conductors, this 50 ft run delivers consistent conductivity and steady signaling across typical residential or light commercial installations. The round, smooth jacket is built to ease pulling through tight spaces, while a rip cord helps with quick jacket removal during installation.

Performance and safety

• Solid copper conductors maximize conductivity and reduce resistance along the full length of the cable.
• 300 V CL3R Power-Limited Circuit rating supports safe, controlled power delivery for low-voltage systems.
• UL and ETL listings indicate conformity to recognized safety and performance standards.
• RoHS compliant materials minimize hazardous substances while maintaining reliability.
• Sunlight resistance enables outdoor or sun-exposed applications without compromising flexibility or durability.
• CMR/FT4 riser-rated construction supports vertical runs and multi-story wiring scenarios.

Installation-friendly design

The cable’s round jacket and smooth edges reduce snagging as you route it around corners or through conduits. A built-in rip cord simplifies jacket removal, helping to speed up terminations and reduce wear on tools and insulation.

Versatility and use cases

Designed for thermostat wiring, HVAC controls, doorbells, burglar alarms, intercoms, annunciator and bell systems, and other low-voltage networks, this cable provides flexibility for both indoor runs and protected outdoor setups. The combination of rigidity and pliability makes it suitable for tidy, reliable installations in a variety of environments.

Notes on application

• Operate within specified low-voltage limits to maintain performance and safety.
• Check local codes for outdoor routing and protection requirements to ensure compliant installations.