Sunstat Relay R4 For Electric Floor Heating Systems Dual Voltage 120V 240V Built In 15 Amp Relay Extends Sunstat Control To Larger Areas Handles Up To 150 Sq Ft At 120V Or 300 Sq Ft At 240V Easy Panel Plug In For Bigger Heat Zones

Extend SunStat thermostat control to larger floor zones (R4)
✔️ Dual-voltage 120V/240V relay with GFCI; covers 150 to 300 sq ft

The SunStat Relay R4 is a dual-voltage device designed to extend a SunStat thermostat’s reach for electric floor heating. It handles higher amp loads and provides options for bigger heat zones.

✅ Dual-voltage 120V/240V operation with built-in GFCI for safe use
✅ Wires directly to Connect Plus, Connect, and Command thermostats for easy control
✅ Daisy-chains up to 10 relays for up to 1,500 sq ft at 120V or 3,000 sq ft at 240V
✅ Wireless 915MHz communication with SunStat ConnectPlus for app and voice control
✅ Requires an additional 20-amp circuit and individual breaker per relay

💡 What is the SunStat Relay R4 used for in electric floor heating setups?

Here's a handy, general explanation suitable for similar products.

- Extends thermostat coverage to larger heat zones by controlling higher-current loads
- Works with 120V or 240V systems and offers built-in safety with a GFCI
- Connects to SunStat Connect Plus, Connect, or Command for app and voice control
- Daisy-chains up to 10 relays for expansive installations up to 1,500 sq ft (120V) or 3,000 sq ft (240V)
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