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EMERSON Low Voltage Thermostat: Heat and Cool - Digital Thermostats
EMERSONDigital Thermostats

EMERSON Low Voltage Thermostat: Heat and Cool

SKU 3G-OTH-70341

Brand
EMERSON
Item
Low Voltage Thermostat: Heat and Cool
Category
Digital Thermostats
Available to Order
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Technical specs
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Technical Specifications

EMERSON
Brand
EMERSON
Shape
Rectangle
Voltage
30V AC
Digit Size
Easy Read
Application
Heat and Cool
Control Type
Slide Switch
Fan Settings
Auto
Key Features
Temperature Limits
Changeover Type
Automatic
System Settings
Auto
Mounting Direction
Horizontal
Terminal Designations
Y2
Manufacturer Part Number
1F85U-42NP
Temperature Differential
0.5° to 1.2°F
Temperature Control Range
45° to 99°F
View Full Spec Sheet

Technical Documents

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

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, B/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01E78 144). Key specifications — Application: Heat or Cool; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 20V AC; Terminal Designations: W; 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, B/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01E78 144). Key specifications — Application: Heat or Cool; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 20V AC; Terminal Designations: W; System Settings: Cool-Heat-Off; Temperature Control Range: 45° to 99°F; Changeover Type: Manual.
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, B/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01F78 144S1). Key specifications — Application: Heat or Cool; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 30V AC; Terminal Designations: Y; 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, B/G/O/RC/RH/W/Terminal Designations, Auto-On (MPN 01F78 144S1). Key specifications — Application: Heat or Cool; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 30V AC; Terminal Designations: Y; System Settings: Cool-Heat-Off; Temperature Control Range: 45° to 99°F; Changeover Type: Manual.
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/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.
EMERSON Line Voltage Thermostat: Heat Only, Heat-Off, 45° to 90°F, Slide Switch, 120V AC, 1H (MPN 01E65 144). Key specifications — Application: Heat Only; Key Features: Soundproofed for Quiet Operation; System Settings: Heat-Off; Switch Type/Action: SPST, Open on Rise; Temperature Control Range: 45° to 90°F; Stages: 1H; Voltage: 120V AC; Brand: EMERSON.
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EMERSON Line Voltage Thermostat: Heat Only, Heat-Off, 45° to 90°F, Slide Switch, 120V AC, 1H (MPN 01E65 144). Key specifications — Application: Heat Only; Key Features: Soundproofed for Quiet Operation; System Settings: Heat-Off; Switch Type/Action: SPST, Open on Rise; Temperature Control Range: 45° to 90°F; Stages: 1H; Voltage: 120V AC; Brand: EMERSON.
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B/R/W2/Terminal Designations, 20V AC (MPN 1F79-111). Key specifications — Application: Heat or Cool; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 20V AC; Terminal Designations: Y; System Settings: Cool-Emergency Heat-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 1F79-111). Key specifications — Application: Heat or Cool; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 20V AC; Terminal Designations: Y; System Settings: Cool-Emergency Heat-Heat-Off; Temperature Control Range: 45° to 99°F; Changeover Type: Manual.
EMERSON Low Voltage Thermostat: Heat Only, RH/W, Auto, On-Off, On-Off/Auto, Vertical, Rectangle (MPN 1E78-140). Key specifications — Application: Heat Only; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 20V AC; Terminal Designations: RH; System Settings: On-Off; Temperature Control Range: 45° to 99°F; Shape: Rectangle.
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EMERSON Low Voltage Thermostat: Heat Only, RH/W, Auto, On-Off, On-Off/Auto, Vertical, Rectangle (MPN 1E78-140). Key specifications — Application: Heat Only; Key Features: Selectable Celsius or Fahrenheit Temperature Display; Temperature Differential: 0.8° to 1.5°F; Voltage: 20V AC; Terminal Designations: RH; System Settings: On-Off; Temperature Control Range: 45° to 99°F; Shape: Rectangle.
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/L/O/B/R/W2/Terminal Designations, Auto-On (MPN 1F89EZ-0251). Key specifications — Application: Heat or Cool; Key Features: Home-Sleep-Away Preset Buttons; Temperature Differential: 0.6° to 1.7°F; Voltage: 20V AC; Terminal Designations: G; 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/G/L/O/B/R/W2/Terminal Designations, Auto-On (MPN 1F89EZ-0251). Key specifications — Application: Heat or Cool; Key Features: Home-Sleep-Away Preset Buttons; Temperature Differential: 0.6° to 1.7°F; Voltage: 20V AC; Terminal Designations: G; System Settings: Cool-Heat-Off; Temperature Control Range: 45° to 99°F; Changeover Type: Manual.
EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/E/G/L/O/B6/R/W2/Terminal Designations (MPN 1F83H-21NP). Key specifications — Application: Heat or Cool; Key Features: Temperature Limits; Temperature Differential: 0.5° to 1.2°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/B6/R/W2/Terminal Designations (MPN 1F83H-21NP). Key specifications — Application: Heat or Cool; Key Features: Temperature Limits; Temperature Differential: 0.5° to 1.2°F; Voltage: 20V AC; Terminal Designations: C; System Settings: Cool-Heat-Off; Temperature Control Range: 45° to 99°F; Changeover Type: Manual.