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Schertz - 1H/1C Programmable Thermostat for Home – Heat Pump & Single-Stage Compatible, Battery-Powered, No C-Wire Needed

Model: T21STK-2
SKU: 11545460
$62.42
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Comp. Value: $68.66
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MESSENGER SCHERTZ INC
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Specifications
  • App Compatible
    No
    Touch Screen
    No
    ENERGY STAR Certified
    No
  • Key Specs
    • App Compatible: false (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
    • Touch Screen: false (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
    • ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
  • General
    • Brand: Schertz
    • Model Number: T21STK-2
    • Product Name: 1H/1C Programmable Thermostat for Home – Heat Pump & Single-Stage Compatible, Battery-Powered, No C-Wire Needed
  • Dimensions
    • Product Height: 2.01 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 5.2 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth: 6.81 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
  • Power
    • Wire Configuration: 4-Wire
    • Power Source: Battery-powered
    • Voltage Type: Low voltage (The kind of voltage used by the device.)
  • Compatibility
    • App Compatible: false (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
    • Compatible Product(s): Heat pumps
  • Features
    • Touch Screen: false (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
    • Remote Sensor Capable: false (Indicates whether the thermostat is compatible with remote sensors. This capability allows for the connection of multiple sensors in order to collect temperature data from several locations in a zone for an overall assessment of the temperature needs.)
  • Certifications Listings & Approvals
    • ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
  • Warranty
    • Warranty - Parts: 1 year
  • Other
    • UPC: 696498759249

Supports single-stage heating and cooling, heat pumps without auxiliary heat, hydronic heating, boilers, gas fireplaces (24V), and 750 millivolt systems. Compatible with gas, electric, and oil furnaces. (Tip: Verify that your base supports 2–5 wires before purchasing.)

  • Wide Compatibility:: Supports single-stage heating and cooling, heat pumps without auxiliary heat, hydronic heating, boilers, gas fireplaces (24V), and 750 millivolt systems. Compatible with gas, electric, and oil furnaces. (Tip: Verify that your base supports 2–5 wires before purchasing.)
  • Dual Power Options:: Operates via 24VAC or 2 AA batteries. No C-wire required when battery-powered, though connecting a C-wire is recommended for optimal stability and to reduce battery changes. Not Compatible With: Heat pumps with auxiliary/emergency heat, dual fuel/hybrid heating, 110–240V electric baseboards, line voltage, convectors, radiant-ceiling heat, mini-splits, and 12V RV systems.
  • User-Friendly Design:: Protective cover hides some buttons and the battery slot to prevent accidental changes. Easy-to-read backlit LCD displays temperature in °F or °C.
  • Memory Retention: Maintains custom settings during power outages, so your comfort remains uninterrupted.
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Pros for Schertz - 1H/1C Programmable Thermostat for Home – Heat Pump & Single-Stage Compatible, Battery-Powered, No C-Wire Needed
There were no pros for this productEase of Use, Overall Performance, Installation, Remote Control, ConnectivityEase of Use, Overall Performance, Installation, Connectivity, Remote ControlThere were no pros for this product
Cons for Schertz - 1H/1C Programmable Thermostat for Home – Heat Pump & Single-Stage Compatible, Battery-Powered, No C-Wire Needed
There were no cons for this productCompatibility, C-WireCompatibility, Size, Temperature Accuracy, App FunctionalityThere were no cons for this product

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