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EMERSON Low Voltage Thermostat: Heat or Cool, Manual, B/G/O/RC/RH/W/Terminal Designations - Digital Thermostats
EMERSONDigital Thermostats

EMERSON Low Voltage Thermostat: Heat or Cool, Manual, B/G/O/RC/RH/W/Terminal Designations

The EMERSON Low Voltage Thermostat (SKU 2TE31, MPN 01E78 144) is a digital thermostat for Heat or Cool applications. It operates on 20V AC with a manual changeover type and system settings of Cool-Heat-Off. Key specs…

SKU 3G-OTH-70478

Brand
EMERSON
Item
Low Voltage Thermostat: Heat or Cool, Manual, B/G/O/RC/RH/W/Terminal Designations
Category
Digital Thermostats
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Technical Specifications

EMERSON
Manufacturer Part Number
01E78 144
Type
Manual, B/G/O/RC/RH/W/Terminal Designations, Auto-On
Shape
Rectangle
Voltage
20V AC
Digit Size
Standard
Application
Heat or Cool
Control Type
Slide Switch
Fan Settings
Auto-On
Key Features
Selectable Celsius or Fahrenheit Temperature Display
Changeover Type
Manual
System Settings
Cool-Heat-Off
Mounting Direction
Vertical
Terminal Designations
W
Temperature Differential
0.8° to 1.5°F
Temperature Control Range
45° to 99°F
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EMERSON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EMERSON Low Voltage Thermostat (SKU 2TE31, MPN 01E78 144) is a digital thermostat for Heat or Cool applications. It operates on 20V AC with a manual changeover type and system settings of Cool-Heat-Off. Key specs include a temperature control range of 45° to 99°F, a temperature differential of 0.8° to 1.5°F, and a selectable Celsius or Fahrenheit temperature display. The thermostat features a slide switch control, Auto-On fan setting, and terminal designation W.

Used in

Common applications for EMERSON
Commercial refrigeration — Emerson single-stage electronic control (SKU 44R204) for walk-in coolers and freezers
HVAC system retrofits — Emerson low-voltage digital thermostat (SKU 3MY10) for heat or cool control in office buildings
Industrial process temperature — Emerson line-voltage mechanical thermostat (SKU 2E399) for equipment heating in manufacturing
Residential heating — Emerson analog heat-only thermostat (SKU 3MU96) for baseboard or radiant systems
Heat pump installations — Emerson standard thermostat (SKU 42PD14) for 1H/1C heat pump systems in commercial spaces
Cooling-only applications — Emerson mechanical cool-only thermostat (SKU 3MU97) for server rooms or storage areas

EMERSON Products

3G Electric supplies EMERSON digital thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/O/B/R/W/Terminal Designations, Auto-On (MPN 1F86EZ-0251). Key specifications — Application: Heat or Cool; Key Features: Change Filter Reminders; Temperature Differential: 0.6° to 1.7°F; Voltage: 20V AC; Terminal Designations: C; System Settings: Cool-Heat-Off; Temperature Control Range: 45° to 99°F; Changeover Type: Manual.
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EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 20V AC (MPN 01F89 211S1). Key specifications — Application: Heat or Cool; Key Features: Batteries Not Required; Temperature Differential: 0.6° to 1.5°F; Voltage: 20V AC; Terminal Designations: L; System Settings: Cool-Heat-Off; Temperature Control Range: 45° to 99°F; Changeover Type: Manual.
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