We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

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 01F78 144S1, MPN 01F78 144S1) is a digital thermostat for heat or cool applications. It operates on 30V AC with a manual changeover and system settings of Cool-Heat-Off. Key…

SKU 3G-OTH-70177

Also listed as: 01F78144S1 · 01F78-144S1

Brand
EMERSON
Item
Low Voltage Thermostat: Heat or Cool, Manual, B/G/O/RC/RH/W/Terminal Designations
Category
Digital Thermostats
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

EMERSON
Manufacturer Part Number
01F78 144S1
Type
Manual, B/G/O/RC/RH/W/Terminal Designations, Auto-On
Shape
Rectangle
Voltage
30V 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
Horizontal
Terminal Designations
Y
Temperature Differential
0.8° to 1.5°F
Temperature Control Range
45° to 99°F

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

EMERSON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EMERSON Low Voltage Thermostat (SKU 01F78 144S1, MPN 01F78 144S1) is a digital thermostat for heat or cool applications. It operates on 30V AC with a manual changeover and system settings of Cool-Heat-Off. Key specifications 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.

Frequently Asked Questions

What is the EMERSON Low Voltage Thermostat 01F78 144S1 used for?

The EMERSON Low Voltage Thermostat is used for manual heat or cool control in residential or light commercial HVAC systems. It operates on 30V AC and features system settings of Cool-Heat-Off, a manual changeover, and a selectable Celsius or Fahrenheit display.

What are the specifications of the EMERSON 01F78 144S1 thermostat?

The EMERSON 01F78 144S1 is a digital thermostat for heat or cool applications. It operates at 30V AC with a temperature control range of 45° to 99°F and a differential of 0.8° to 1.5°F. It has manual changeover, Cool-Heat-Off settings, and Auto-On fan control.

Where to buy the EMERSON 01F78 144S1 thermostat worldwide?

3G Electric supplies the EMERSON 01F78 144S1 thermostat worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the EMERSON Low Voltage Thermostat?

To install the EMERSON thermostat, first turn off power to the HVAC system. Mount the thermostat horizontally, connect wires to the Y terminal and other designations as needed, then secure the base. Set the slide switch to desired system mode and fan setting.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 20V AC (MPN 1F79-111)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 20V AC (MPN 1F79-111)
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/O/B/R/W/Terminal Designations, Auto-On (MPN 1F86EZ-0251)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/O/B/R/W/Terminal Designations, Auto-On (MPN 1F86EZ-0251)
EMERSON Low Voltage Thermostat: Heat and Cool, Manual, A/B/G/O/RC/RH/W/Terminal Designations, 30V AC (MPN 01C26 101S1)
EMERSON
EMERSON Low Voltage Thermostat: Heat and Cool, Manual, A/B/G/O/RC/RH/W/Terminal Designations, 30V AC (MPN 01C26 101S1)
EMERSON Low Voltage Thermostat: Heat and Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 5-1-1 (MPN 01F82 261S1)
EMERSON
EMERSON Low Voltage Thermostat: Heat and Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 5-1-1 (MPN 01F82 261S1)
EMERSON Low Voltage Thermostat: Heat Only, RH/W, Auto, On-Off, On-Off/Auto, Vertical, Rectangle (MPN 1E78-140)
EMERSON
EMERSON Low Voltage Thermostat: Heat Only, RH/W, Auto, On-Off, On-Off/Auto, Vertical, Rectangle (MPN 1E78-140)
EMERSON Low Voltage Thermostat: Heat and Cool, Manual, A/B/G/O/RC/RH/W/Terminal Designations (MPN 1E56N-444)
EMERSON
EMERSON Low Voltage Thermostat: Heat and Cool, Manual, A/B/G/O/RC/RH/W/Terminal Designations (MPN 1E56N-444)

More from EMERSON

View all EMERSON parts
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 20V AC (MPN 01F89 211S1)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 20V AC (MPN 01F89 211S1)
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/RC/RH/W/YO/B, Auto-On, Cool-Heat-Off (MPN 1F83C-11NP)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/RC/RH/W/YO/B, Auto-On, Cool-Heat-Off (MPN 1F83C-11NP)
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, B/C/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01F86 344)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, B/C/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01F86 344)
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, B/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01E78 144)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, B/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01E78 144)
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B6/R/W2/Terminal Designations (MPN 1F83H-21NP)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B6/R/W2/Terminal Designations (MPN 1F83H-21NP)
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/L/O/B/R/W2/Terminal Designations, Auto-On (MPN 1F89EZ-0251)
EMERSON
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/L/O/B/R/W2/Terminal Designations, Auto-On (MPN 1F89EZ-0251)
EMERSON Low Voltage Thermostat: Heat and Cool, Auto, Auto, Auto, Auto/Auto, Horizontal, Rectangle (MPN 1F85U-22NP)
EMERSON
EMERSON Low Voltage Thermostat: Heat and Cool, Auto, Auto, Auto, Auto/Auto, Horizontal, Rectangle (MPN 1F85U-22NP)
EMERSON Low Voltage Thermostat: Heat and Cool, Auto, Auto, Auto, Auto/Auto, Horizontal, Rectangle (MPN 1F85U-42NP)
EMERSON
EMERSON Low Voltage Thermostat: Heat and Cool, Auto, Auto, Auto, Auto/Auto, Horizontal, Rectangle (MPN 1F85U-42NP)