This item has been discontinued.  See alternate products available online or call 1-800-217-6872.


    Low Voltage Thermostat, Stages Cool 1, Stages Heat 2

  • Item # 1AYR4
  • Mfr. Model # TH4210D1005
Low Voltage Thermostat, Stages Cool 1, Stages Heat 2

See alternate products available online.

Product Details

Restricted: This item is only approved for purchase by Business Accounts. Digital Programmable Thermostats

• Retain programmed information in the event of a power loss White color
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Technical Specifications

Item # 1AYR4
Mfr. Model # TH4210D1005
UNSPSC #41112209
Shipping Weight 0.7 lbs
Country of Origin Mexico *
Item Low Voltage Thermostat
Stages Heat 2
Stages Cool 1
Temp. Settings per Day 4
Programs per Week 5-2
Terminal Designations R, C, Y, G, O, B, AUX, E, L
WiFi Capability No
System Switching Heat-Cool-Off-Emergency
Fan Switching Auto-On
Display Size 1.73 sq. in.
Display Type Backlit
Automatic Changeover No
Humidification Control No
Remote Sensing Capability No
Low Battery Indicator Yes
Dual Transformer Compatible No
Power Method Hardwired/Battery
Voltage 20 to 30VAC
750mV Compatible Yes
Mounting Type Horizontal
Height 3-13/16"
Width 5-3/8"
Depth 1-1/4"
Color White
Control Range Heat 40 Degrees to 90 Degrees F, Cool 50 Degrees to 99 Degrees F
Features Side Switches
For Use With Heat Pumps
Includes Subbase
* This product's country of origin is subject to change

Compliance and Restrictions