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🔥 Elevate your space with smart warmth — control comfort at your fingertips!
The SunTouch SunStat Relay R4 is a high-capacity, dual-voltage (120V/240V) relay designed to extend SunTouch floor heating systems requiring over 15 amps. Featuring built-in GFCI safety, 915MHz wireless communication, and compatibility with SunStat Connect thermostats, it enables smart, scalable control of up to 3,000 sq. ft. via app and voice commands. Ideal for modern, large-scale residential or commercial radiant heating installations.












| ASIN | B09TRXV6L5 |
| Best Sellers Rank | #42,966 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #661 in Heaters & Heater Accessories |
| Brand | SunTouch |
| Brand Name | SunTouch |
| Coil Resistance | 15 |
| Coil Voltage | 240 volts_of_alternating_current |
| Connector Type | Plug-in Or Quick Connect |
| Contact Current Rating | 15 A |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Current Rating | 15 A |
| Customer Reviews | 3.9 out of 5 stars 8 Reviews |
| Included Components | Relay SunTouch Controller |
| Item Type Name | Relay R4 for 15 Amps Heating Systems for 120V and 240V |
| Manufacturer | Watts |
| Maximum Switching Current | 15 A |
| Maximum Switching Voltage | 240 volts |
| Minimum Switching Voltage | 120 volts_of_alternating_current |
| Model | 500980 |
| Mounting Type | Panel Mount or DIN Rail Mount |
| Number of Terminals | 2 |
| Operation Mode | Automatic |
| Part Number | 81020608 |
| Specification Met | 4-ul Certified |
| UPC | 840213021542 |
| Unit Count | 1 Count |
| Wattage | 4800 watts |
T**M
Perfect replacement for SunTouch C3
Perfect replacement for our SunTouch Relay C3 that had failed after 6.5 years. They redesigned the communication wire block, making it much harder to get the wires set. That was annoying for thr install, but functionality is perfect
B**O
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.
Trustpilot
1 month ago
1 week ago