Will this work with schluter systems ditra heat 240v cable?

It should, it is a dual voltage 120/240 VAC controller.

Can this replace an Emerson Warm Tiles thermostat?

As long as the Emerson uses 120V line voltage then this thermostat should work and according to the installation directions for the Emerson it is a line voltage thermostat so it should work.

What's the maximum watts for this? I am needing one that controls 4500watts.

3600 Watt at 240 VAC. You may want to explore their SunStst relay C3 in addition to your controller. You can also contact their customer service; very knowledgeable and helpful people.

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SunTouch SunStat Relay R4 15A Dual Voltage Wi-Fi Floor Heating Relay 15 Amp

SunTouch SunStat Relay R4 15A Dual Voltage Wi-Fi Floor Heating Relay 15 Amp

Product ID: 20998394

Details

Connector Type
Plug-in Or
Contact Material
Brass
Contact Type
Normally Open
Current Rating
15 A
Mounting Type
Panel Mount or

⚡Dual-voltage 120V/240V power control

📏Controls up to 3,000 sq. ft. coverage

📶915MHz wireless & Wi-Fi connectivity

KD 63.22

Duties & taxes included

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Description

🔥 Elevate your floor heating game with smart power and limitless reach!

SAFETY FIRST ALWAYS - Built-in GFCI and status indicators ensure your floor heating system runs reliably and securely 24/7.
SCALE WITHOUT LIMITS - Daisy-chain up to 10 relays to heat expansive areas up to 3,000 sq. ft.—perfect for large homes or commercial spaces.
CONTROL FROM ANYWHERE - Use the free Watts Home app on iOS or Android to monitor and adjust your floor heating anytime, anywhere.
POWER YOUR COMFORT ZONE - Dual-voltage design effortlessly manages 15 amps at 120V or 240V for versatile floor heating control.
SEAMLESS SMART INTEGRATION - Connects wirelessly via 915MHz and Wi-Fi to SunStat thermostats with Alexa & Google voice control compatibility.

The SunTouch SunStat Relay R4 is a cutting-edge dual-voltage (120V/240V) relay designed to extend SunTouch floor heating systems requiring over 15 amps. Featuring built-in GFCI protection, 915MHz wireless tech, and Wi-Fi compatibility, it integrates seamlessly with SunStat thermostats and smart home assistants. Capable of controlling up to 3,000 sq. ft. via daisy-chaining, it offers scalable, safe, and convenient floor heating control for residential and commercial spaces.

Specifications

ASIN	B09TRXV6L5
Best Sellers Rank	#25,196 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #369 in Heaters & Heater Accessories
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 3.9 out of 5 stars (8)
Included Components	Relay SunTouch Controller
Item Highlight	120 Volts/240V, Built-In Gfci, 915Mhz Wireless, Controls Up to 3100 Square Feet Of Coverage, Daisy-Chain Up to 10 Relays
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 Items	1
Number of Terminals	2
Operation Mode	Automatic
Part Number	81020608
Specification Met	4-ul Certified
UPC	840213021542
Unit Count	1 Count
Wattage	4800 watts

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