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SunStat Sub Control Relay II for extending your system beyond 15 amps

SKU# 500810

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Sorry, this item has been discontinued



The SunStat Relay II is only compatible with the SunStat Pro II & View Thermostats which are both discontinued.

Main features associated with this relay include:

  • Built-in Class A GFCU test Light and button - 5milliAmp trip for safety.
  • Dual Voltage: 120/240V
  • Durable 15 Amp Relay controls 300 SF (240v) at 12 Watts per Sq Ft (150 SF/120v)
  • LED indicator Lights for Power, Heating, GFCI test/trip modes, Troubleshooting
  • 3 year Warranty


UPC 840213158149
What's In The Box Relay, Wire Nuts,Mounting screws,Screwdriver
Voltage 120 VAC /240 VAC
GFCI / GFEP Protection 5 mA Class A Built In - With Test Button Feature & indicator light
Safety Listing Safety Listed in USA & Canada : UL 873, UL 943 & CSA C22.2 No. 24, CSA/CAN C22.2 No.144, ETL Control No. 3037530
Ambient Air Temperature Controlled only by T-stat
Ambient Air & Floor Temperature Controlled only by T-stat
Manual Override yes
Home Automation Integration Yes
Floor Sensor Length 15' Sensor
Floor Sensor Length Meters 4.57
Floor Sensor Resistance Range 8-14k
Floor Sensor Type Sensor with T-stat
Visible Depth 13/16" (20.6 mm)
Display Height 2.75
Display Width 1.75
Instructions + Video

Instructions + Video

Instruction Manual
Unit and wires protrude into box 0.81
Floor Temperature Sensing Primary Controlled only by T-stat
Outside temp and humidity sensor option (purchased separately) n/a
More Details

More Details

Manufacturer Watts Radiant
Warranty 3 yr
Remote control Mode yes
Smart Technology/Early Start yes
Regulator Mode option no
Heating Cycle length n/a
Multi Gang with other switches? Not recommended
Programming Method Controlled only by T-stat
Pre-Loaded program options Controlled only by T-stat
User Settable program Controlled only by T-stat
7 Day Prog (Su - Sa) Controlled only by T-stat
5-2 Program (M-F + S-S) Controlled only by T-stat
5 - 1 - 1 Prog (M-F - Sa - Su) Controlled only by T-stat
Programming Saved Indefinitely (or number of hours) Controlled only by T-stat
No Battery Required No Battery Required
Minimum Display Temp Controlled only by T-stat
Maximum Display Temp Controlled only by T-stat
Accuracy Degrees F Controlled only by T-stat
Minimum Setting Temp Controlled only by T-stat
Maximum Setting Temp Controlled only by T-stat
Repair Information No serviceable parts
Location / Use : Indoor Only Indoor Dry Location Only
Floor Sensor Included Sensor with T-stat

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