Thermostat Wire 18 ga. 5-Conductor 50 ft.

Upgrade your HVAC and low-voltage control projects with this premium 18 AWG, 5-conductor thermostat wire. Constructed with solid copper conductors and protected by a durable brown PVC jacket, it delivers reliable signal transmission for heating, ventilation, air conditioning controls, bell and alarm systems. Rated for 150 V and a wide temperature range, it’s sunlight-resistant and compliant with UL, CSA and RoHS standards—ideal for both indoor and outdoor applications.

Key Features

• Solid 18 AWG copper conductors for minimal signal loss
• Five conductors for multi-zone thermostat and control systems
• 50 ft length accommodates most residential and commercial installations
• Brown PVC jacket and 6 mil insulation for abrasion and sunlight resistance
• Rated 150 V maximum, temperature range –20 °C to 60 °C (–4 °F to 140 °F)
• Class 2 power-limited circuit cable meets NEC articles 725, 760 and 800
• UL Listed, CSA Certified and RoHS Compliant

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.