--- product_id: 461581801 title: "SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat" brand: "suntouch" price: "€ 267.49" currency: EUR in_stock: true reviews_count: 1 category: "Sun Touch" url: https://www.desertcart.hr/products/461581801-suntouch-15-amp-relay-r4-wi-fi-dual-voltage-control store_origin: HR region: Croatia --- # Dual-voltage 120V/240V power control Up to 300 sq ft coverage at 240V Built-in 915MHz wireless connectivity SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat **Brand:** suntouch **Price:** € 267.49 **Availability:** βœ… In Stock ## Summary > πŸ”₯ Elevate your floor heating game with smart power and wireless freedom! ## Quick Answers - **What is this?** SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat by suntouch - **How much does it cost?** € 267.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/461581801-suntouch-15-amp-relay-r4-wi-fi-dual-voltage-control) ## Best For - suntouch enthusiasts ## Why This Product - Trusted suntouch brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safety First, Always:** Built-in GFCI and status indicators ensure reliable, worry-free operation. - β€’ **Scale Without Limits:** Daisy-chain up to 10 relays to heat massive spaces up to 3,000 sq ft at 240V. - β€’ **Power Meets Precision:** Dual-voltage control for flexible, high-capacity heating systems up to 15 amps. - β€’ **Smart Control On-The-Go:** Integrates with SunStat ConnectPlus thermostat and Watts Home app for anytime, anywhere system management. - β€’ **Seamless Wireless Command:** 915MHz wireless tech with Wi-Fi and voice assistant compatibility for effortless remote control. ## Overview The SunTouch SunStat Relay R4 is a robust dual-voltage (120V/240V) relay designed to control electric floor heating systems requiring over 15 amps. Featuring built-in GFCI safety, 915MHz wireless communication, and compatibility with SunStat ConnectPlus thermostats, it supports Wi-Fi and voice control via Alexa and Google Assistant. Capable of managing up to 150 sq ft at 120V or 300 sq ft at 240V, and expandable to cover up to 3,000 sq ft through daisy-chaining, it’s ideal for large residential or commercial heating installations. ## Description The SunTouch SunStat Relay R4 is an advanced 120V/240V dual-voltage device designed specifically to control the voltage for SunTouch electric floor heating systems that require more than 15 amps. It is equipped with built-in GFCI and status indicators, ensuring safe and reliable operation.Capable of direct wired connections to SunStat thermostats, including Connect Plus, Connect, and Command, this relay provides simple and efficient control of larger heating systems. Please note that it should not be used with older model thermostats or relays and each relay requires an additional 20-amp circuit and individual circuit breaker to function properly.Utilizing 915MHz wireless technology, the Relay R4 supports Wi-Fi connectivity and can connect wirelessly to the SunStat ConnectPlus Thermostat, enabling seamless interaction with mobile apps available for both Android and iOS devices. This connectivity extends to voice control functionality, as the system is compatible with Alexa and Hey Google. With the free Watts Home app, users can conveniently monitor and control their floor warming system from anywhere at any time, adding a layer of modern convenience.Additionally, the SunStat Relay R4 is highly capable, managing up to 150 square feet of heating at 120V or 300 square feet at 240V. For larger installations, the relay allows for the daisy-chaining of up to ten relays, enabling expansive control of up to 1,500 square feet at 120V or 3,000 square feet at 240V. This scalability makes the Relay R4 an ideal solution for both residential and commercial applications. Review: Avoid this item - no mechanism to control temperature - This thermostat did not have any control or mechanism to set the temperature of the heated floor system. I assumed that was basic functionality for a thermostat, but apparently I should have researched more before purchasing. ## Features - VOLTAGE CONTROL: The SunTouch SunStat Relay R4 is a dual-voltage 120V/240V device designed to control the voltage to SunTouch electric floor heating systems that require more than 15 amps; it should not be used with older model thermostats or relays. Includes built-in GFCI and status indicators to ensure safe operation. - ENHANCED COMPATIBILITY: This relay device wires directly to SunStat thermostats - Connect Plus, Connect, and Command - for simple control of larger systems. Each relay requires an additional 20-amp circuit and individual circuit breaker. - WIRELESS COMMUNICATION: Utilizing advanced 915MHz wireless technology, the SunStat Relay R4 can also communicate wirelessly with the SunStat ConnectPlus Thermostat, which supports Wi-Fi connectivity with apps for Android and iOS mobile devices and works with Alexa and Hey Google for voice control of your floor warming system. The free Watts Home app enables convenient monitoring and control of your system from anywhere and any time. - HIGH-CAPACITY COVERAGE: This relay device can control up to 150 sq. ft. at 120V or 300 sq. ft. at 240V. Additionally, it allows daisy-chaining of up to ten relays for expansive control of up to 1,500 sq. ft. at 120V or 3,000 sq. ft. at 240V, making it ideal for large-scale installations. - FEEL THE SUN: SunTouch provides a wide range of electric floor heating and snow melting systems that are widely used in residential, commercial, and institutional projects to create comfortable, warm, safe, inviting spaces. With more than 30 years of experience in electric radiant heating, we are proud to deliver quality products, simple-design services, and world-class support. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09TRXV6L5 | | Additional Features | Auto-Scheduling | | Backlight | No | | Best Sellers Rank | #19,495 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #565 in Heaters & Heater Accessories | | Brand Name | SunTouch | | Color | Black | | Connectivity Protocol | Wi-Fi | | Connectivity Technology | Wireless connection | | Control Method | Touch | | Controller Type | Hand Control | | Customer Reviews | 3.0 3.0 out of 5 stars (5) | | Display Type | LED | | Included Components | Relay thermostat | | Item Type Name | Relay R4 for 15 Amps Heating Systems for 120V and 240V | | Manufacturer | Watts | | Material Type | Plastic | | Model Name | SunStat | | Model Number | 500980 | | Mounting Type | Panel Mount or DIN Rail Mount | | Power Source | Corded Electric | | Product Style | Relay SunTouch Controller | | Shape | Rectangular | | Specific Uses For Product | Electric Baseboard Heater | | Specification Met | 4-ul Certified | | Temperature Control Type | Heating | | UPC | 840213021542 | | Voltage | 120 Volts | | Wattage | 4800 watts | ## Product Details - **Brand:** SunTouch - **Color:** Black - **Controller Type:** Hand Control - **Model Name:** SunStat - **Special Feature:** Auto-Scheduling ## Images ![SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat - Image 1](https://m.media-amazon.com/images/I/51M7Ew+VddL.jpg) ![SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat - Image 2](https://m.media-amazon.com/images/I/415TxH+K6ZL.jpg) ![SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat - Image 3](https://m.media-amazon.com/images/I/41OhZqsNBtL.jpg) ![SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat - Image 4](https://m.media-amazon.com/images/I/6186J4EENxL.jpg) ![SunTouch 15 Amp Relay R4, Wi-Fi Dual Voltage Control for SunTouch Electric Floor Systems Up to 150 Sq Ft at 120V/300 Sq Ft at 240V Built-In 915MHz Wireless Connection to SunStat ConnectPlus Thermostat - Image 5](https://m.media-amazon.com/images/I/61wyax+P+0L.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐ Avoid this item - no mechanism to control temperature *by B***O on March 29, 2026* This thermostat did not have any control or mechanism to set the temperature of the heated floor system. I assumed that was basic functionality for a thermostat, but apparently I should have researched more before purchasing. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/461581801-suntouch-15-amp-relay-r4-wi-fi-dual-voltage-control](https://www.desertcart.hr/products/461581801-suntouch-15-amp-relay-r4-wi-fi-dual-voltage-control) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*