--- product_id: 544590662 title: "Syston Cable Technology 18/4 Solid, HVAC-Thermostat UL/ETL CL3R/CMR/FT4, 18AWG 4 Pure Copper Conductors, Indoor/Outdoor UV Resistant RoHS Brown 500ft Spool" brand: "syston cable technology" price: "₹ 6930" currency: INR in_stock: true category: "Syston Cable Technology" url: https://www.desertcart.in/products/544590662-syston-cable-technology-18-4-solid-hvac-thermostat-ul-etl store_origin: IN region: India --- # 18AWG 4 pure copper conductors Flame-retardant PVC jacket UV resistant for outdoor durability Syston Cable Technology 18/4 Solid, HVAC-Thermostat UL/ETL CL3R/CMR/FT4, 18AWG 4 Pure Copper Conductors, Indoor/Outdoor UV Resistant RoHS Brown 500ft Spool **Brand:** syston cable technology **Price:** ₹ 6930 **Availability:** ✅ In Stock ## Summary > ⚡ Wire smart, install fast, last longer! ## Quick Answers - **What is this?** Syston Cable Technology 18/4 Solid, HVAC-Thermostat UL/ETL CL3R/CMR/FT4, 18AWG 4 Pure Copper Conductors, Indoor/Outdoor UV Resistant RoHS Brown 500ft Spool by syston cable technology - **How much does it cost?** ₹ 6930 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/544590662-syston-cable-technology-18-4-solid-hvac-thermostat-ul-etl) ## Best For - syston cable technology enthusiasts ## Why This Product - Trusted syston cable technology brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Certified Safety & Compliance:** Meets NEC, UL 13, UL 1666 FT4 flame rating, and RoHS standards for peace of mind in professional environments. - • **All-in-One Indoor/Outdoor Cable:** Simplify your HVAC and thermostat wiring with a single, UL/ETL certified cable built to withstand sun and weather. - • **Effortless Installation with Rip Cord:** Save time and frustration—integrated rip cord ensures quick, clean jacket removal every time. - • **Flexible Temperature Range & Strength:** Operates from -4°F to 167°F with a 35 lb max pulling force and a 3-inch minimum bend radius for versatile deployment. - • **Premium 18AWG Solid Copper Conductors:** Experience superior conductivity and reliability with four pure copper cores designed for low voltage precision. ## Overview The Syston Cable Technology 18/4 Solid HVAC-Thermostat cable is a robust, UL/ETL certified 18AWG wiring solution featuring four pure copper conductors, flame-retardant and UV-resistant PVC jacket, and an integrated rip cord for easy installation. Designed for both indoor and outdoor low voltage applications, it meets stringent NEC and RoHS standards, ensuring durability, safety, and professional-grade performance across HVAC, thermostat, and doorbell wiring projects. ## Description Physical Characteristics Conductor: Solid Bare Copper Number of Conductors: 4 Size: 18 AWG Insulation: Premium Polyolefin (Flame-Retardant & RoHS Compliant) Conductor Color Code: 1. Red 2. White 3. Green 4. Blue Rip Cord: Applied longitudinally under jacket Jacket: PVC (Flame-Retardant, Sun Res & RoHS Compliant) Nominal Cable Diameter (in): 0.157 Nominal Cable Net Weight (lbs/1000ft): 29.10 Minimum Bend Radius (in): 3.0 Maximum Pulling Force (lbs): 35 Temperature Rating (°F): Installation: +32 to +140 Storage & Operation: -4 to +167 Certificates for Management System ISO9001: 2008, ISO14001: 2004, OHSAS 18001 Standard Compliances NE: 725 UL Standard: UL 13 Flame Rating: UL 1666 Riser c(UL) FT4 RoHS: Compliant Directive 2011/65/EU Electrical Characteristics Operating Voltage: 300 Volts Max Capacitance: 25pF/ft Nom Impedance: 100 Ohms Nom DC Resistance: 5 Ohms/M’ @ +68 °F ## Features - Applications: Wiring of Thermostat Controls, Heating & Air Conditioning Equipment, Doorbells & other low voltage applications. - Install Friendly. A rip cord underneath the jacket provides for easy removal at installation - Tested physically & electrically in accordance with NEC standards. - Combines indoor/outdoor applications into one product. Complies with the UL 1581 sunlight resistance requirement for outdoor installations. - Do not use as a substitute for OSP Cables. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FPN1RZX | | Item model number | 7232 | | Manufacturer | Syston Cable Technology | | Product Dimensions | 20.32 x 20.32 x 19.05 cm; 5.25 kg | ## Product Details - **Brand:** Syston Cable Technology - **Colour:** Brown - **Material:** Copper - **Number of cable strands:** 4 - **Voltage:** 300 Volts ## Images ![Syston Cable Technology 18/4 Solid, HVAC-Thermostat UL/ETL CL3R/CMR/FT4, 18AWG 4 Pure Copper Conductors, Indoor/Outdoor UV Resistant RoHS Brown 500ft Spool - Image 1](https://m.media-amazon.com/images/I/71YI-RGNHhL.jpg) ## Questions & Answers **Q: How many conductors do I need for my thermostat?** A: Choose thermostat wire based on your HVAC system and terminal count. Basic systems may use 2–4 conductors, while many thermostats use 5. Check requirements before selecting 18/2 through 18/10. **Q: Does a smart thermostat require a C-wire?** A: Many smart thermostats use a C-wire for continuous 24V power, but requirements vary by thermostat and HVAC system. Check the manufacturer’s wiring instructions before choosing thermostat wire. **Q: What does CL3R / CMR riser-rated mean?** A: CL3R/CMR thermostat wire is riser-rated for approved vertical runs between floors and through riser spaces, with flame-spread performance suited for riser applications. Follow NEC and local codes. **Q: Can this thermostat wire be used outdoors?** A: This sunlight-resistant thermostat wire may be used for above-ground outdoor installations where permitted. It is not direct-burial cable. Use a direct-burial rated cable for underground installations. **Q: Can CL3R / CMR thermostat wire be used in plenum spaces?** A: Not where CMP plenum-rated cable is required. CL3R/CMR thermostat wire is riser-rated, while CMP cable is intended for plenum and environmental air spaces. Follow applicable local codes. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/544590662-syston-cable-technology-18-4-solid-hvac-thermostat-ul-etl](https://www.desertcart.in/products/544590662-syston-cable-technology-18-4-solid-hvac-thermostat-ul-etl) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-08-21*