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SunTouch SunStat PRO II Programmable Thermostat LCD

Item Number: 500775

Alternate Part Number: 500775,500775BB,500775SB

MFR Part No: 81015384

Availability: In stock


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The SunStat PRO II programmable thermostat model 500775 is the newest innovation in automatic floor heating control. Built to last by SunTouch the Pro II is easy to install and operate with GFCI built-in for safety and the 3 year warranty is your guarantee of quality. A preset program is ready when you turn it on or use the revolutionary Easy Startup Wizard to customize your schedule in a few minutes. Quick setup, a backlit real time clock display that adjusts for Daylight saving time, network capability and future expandability make the SunStat Pro II 500775 a better choice than its predecessor (model 500670). Want even more features and a touch screen? Check out the SunStat VIEW 

New features and elegant design of the SunStat Pro II 500775 make it the Better choice

  • Startup Wizard lets you warm your floor easily
  • 3 Year Warranty
  • Real-Time Clock with automatic Daylight Savings Time adjustment
  • Larger and easier to read digital display with backlight shows time, day, temperature, etc
  • Menu style programming for ease of use or creating a personalized schedule
  • Program options included (Normal Day, Warm All Night, Home During Day, etc) are new and easier to understand
  • Improved faceplate mounting and connections to power base means no pins to align
  • Solid conductor wires on LINE side for easier and better connection to household wiring
  • Improved HOLD feature: easily set a temperature to maintain for a specified number of days (01-99) or continuously
  • Home Automation integration is not available with this Stat
  • GFCI light is prominent and TEST function is straightforward

Standard Features

  • SunStat Pro 2 is compatible with both 120v or 240v (Dual Voltage)
  • Floor Sensing (15’ sensor included) for stone, tile, laminate, engineered wood and carpet floors
  • Ambient Air sensing mode option included
  • "Master" Control Capability - Each SunStat Pro II allows SunStat Relays (model 500810) to be connected to it to expand your system;
  • Class 2 Insulated Sensor ( 15' long) Wire is included
  • Network Capability allows up to 10 Relays (model 500810) to be connected to Thermostat to expand your heated area
  • “Lock” feature can be enabled to prevent changes to thermostat settings
  • Over ride option for manual control
  • Usage Monitoring - Your SunStat Pro II can report the “hours on” in last 7 and 30 day periods and it can be reset
  • 12 or 24 hour (military time) Display - your choice;
  • SmartStart learning Technology allows your thermostat to learn and adjust start time
  • Temperature Setting Range (floor) of 40 to 99 degrees F (4 to 37 Celsius);
  • Temperature displays in either F or C;
  • 15 Amp capacity to control up to 1800 Watts/150 SF of SunTouch 120VAC mats per control and 3600 Watts/300 SF of 240v SunTouch Mats;
  • Can connect and control SunStat II sub control relay 500810;
  • Built-In Class A GFCI protection with GFCI test Light and button - 5 milliAmp trip;
  • No Battery required - Your programming is saved in memory indefinitely;
What's In The Box Programmable thermostat, sensor wire, wire nuts, screwdriver, mounting screws
Temperature Control programmable
Automatic Daylight savings time adjustment yes
Backlight (display) color Amber Light
Display Type LCD
Voltage 120 VAC /240 VAC
Brand Name SunTouch Floor Warming
Energy Efficient yes
Maximum Load Watts @ 120v 1800
Maximum Load Watts @ 240v 3600
Maximum Load Amps 15
Recommended Supply Circuit size 20 amp breaker
Maximum Heated SF 120V 12 W/SF 150
Maximum Heated SF 240V 12 W/SF 300
Wall Mount Style (Electrical Box reqd) Depth in box 15/16" Overall 1.75
Multi Gang with other switches? Not recommended
Weight 1.5000
Unit Width 3 1/4" (82.6 mm)
Unit Height 5" (127 mm)
Unit Depth 1 3/4" (44.5 mm)
Visible Height 5" (127 mm)
Visible Depth 13/16" (20.6 mm)
Visible Width 3 1/4" (82.6 mm)
Inside Box Width 1 11/16" (42.9 mm)
Inside Box Height 2 3/4" (69.8 mm)
Inside Box Depth 15/16" (23.8 mm)
LCD Display Size Ht 2.75
LCD Display Size Width 1.75
Manufacturer SunTouch Watts Radiant
Controls/Thermostat is required for operation Yes

Recent Reviews

Overall Product Rating:

(5 out of 5)

By: Kyle

Dec 31, 2014

Very Nice Thermostat - Works well and installs easily

I have another older thermostat from another company and have now realized how difficult it is to use! This one from SunTouch is great! It is easy to read and know what is going on - floor temperature and current temperature setting - very easy to read display. I had to program for each day, as we get up very early for work ( I would love to be able to use the default schedule! ) It takes a little patience to program daily, but has a lot of flexibility since each day is separate.
Overall works great and someday might replace my other one with this! I would recommend highly !

Overall Product Rating:

(3 out of 5)

By: Alan

Nov 23, 2014

Instruction manual

This product works well if you use the pre programmed On/Off settings that come from the factory, but, trying to customize the settings is a layman's nightmare. The instructions refer to buttons like "edit" that don't exist. The propeller head who wrote the instructions definitely wasn't thinking of the bone heads of the world like me. Very frustrating.

Overall Product Rating:

(5 out of 5)

By: David

Oct 28, 2013

Great product

Easy to install and works great. I am glad I went with the PRO II as it will allow for more settings and DST.

Overall Product Rating:

(5 out of 5)

By: Paul

Mar 06, 2013

Great Thermostat / Easy to Program

I renovated my bathroom just so that I could enjoy the pleasure of having heated tile. It is the best!

This is the second SunStat Pro that I have installed. The first was the PRO I model and the second was the PRO II. Both worked well and were easy to install and program The PRO I was tough to take apart without fear of breaking some connector pins but PRO II was better.