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These stylish programmable thermostats with a large backlit LCD are available with 15-minute or 15-second cycles.


  • Three choices of temperature control in a single thermostat (Ambient, Floor, or Ambient with Floor temperature limits)
  • Advanced temperature control ensures total comfort by minimizing temperatue varations
  • ON/OFF switch enables thermostat shutdown at the end of heating season for added security
  • Early Start function ensures programmed temperature is reached by programmed time
  • Temporary bypass enables temperature override without changing programming

Product Specifications

Radiant floor
Dimensions (in.)
4.9 in. X 2.8 in. X 0.9 in.
Dimensions (mm)
124 mm X 70 mm X 23 mm
Used With
Aube AC112-01 North American floor sensor, 15 ft. / 4.6 m
With Backlit Display; 15-minute cycles
Item Type
Electrical Ratings
Maximum Load: 0.5 A/24 Vac
Approvals, Canadian Standards Association
Approved; Compliant to CAN/CSA-C828-06
Electrical Connections
6 in. (150 mm) tinned copper lead wires
Supply Voltage
24 Vac
Switch Positions (System)
AF (ambient + floor)/ F (floor only); Display format: F/12 h or C/24h; Early Start function: Enabled or Disabled
Operating Temperature Range (F)
32 F to 120 F
Operating Temperature Range (C)
0 C to 50 C
Power Method
Sensor Element
Differential Temperature (F)
1 F
Differential Temperature (C)
0.5 C
Ambient Temperature Range (F)
32 F to 158 F
Ambient Temperature Range (C)
0 C to 70 C
Switch Type
External electromechanical relay
7 Day program
Terminal Designations
R, C, W
Setting Temperature Range (F)
40 F to 86 F room temperature; 40 F to 104 F floor temperature
Setting Temperature Range (C)
5 C to 30 C room temperature; 5 C to 40 C floor temperature
Parts Needed for Operation (not included) - Non-Zoned System
Aube RC840/RC840T Series Electromechanical Relays
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