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EMERSON 01F89 211S1 Digital Thermostat, 20V AC, Manual Changeover, Heat/Cool - Digital Thermostats
EMERSONDigital Thermostats

EMERSON 01F89 211S1 Digital Thermostat, 20V AC, Manual Changeover, Heat/Cool

The EMERSON Low Voltage Thermostat (SKU 01F89 211S1, MPN 01F89 211S1) is a digital thermostat for Heat or Cool applications. It operates on 20V AC with a manual changeover and system settings of Cool-Heat-Off. Key…

SKU 3G-OTH-70508

Also listed as: 01F89211S1 · 01F89-211S1

Brand
EMERSON
Item
01F89 211S1 Digital Thermostat, 20V AC, Manual Changeover, Heat/Cool
Part Number
01F89 211S1
Category
Digital Thermostats
Available to Order
Also known as:01F89 211S1EMERSON
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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
01F89 211S1
Type
Manual, C/E/G/L/O/B/R/W2/Terminal Designations
AC
20V
Shape
Rectangle
Voltage
20V AC
Digit Size
Standard
Application
Heat or Cool
Control Type
Slide Switch
Fan Settings
Auto-On
Key Features
Batteries Not Required
Changeover Type
Manual
System Settings
Cool-Heat-Off
Mounting Direction
Horizontal
Terminal Designations
L
Temperature Differential
0.6° 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 01F89 211S1, MPN 01F89 211S1) is a digital thermostat for Heat or Cool applications. It operates on 20V AC with a manual changeover and system settings of Cool-Heat-Off. Key specs include a temperature control range of 45° to 99°F, a temperature differential of 0.6° to 1.5°F, and terminal designations including L. Batteries are not required, and it features a slide switch control, Auto-On fan setting, and horizontal mounting.

Frequently Asked Questions

What is the EMERSON 01F89 211S1 thermostat used for?

The EMERSON 01F89 211S1 is a low voltage digital thermostat for Heat or Cool applications. It provides manual changeover between cooling and heating, with system settings of Cool-Heat-Off. It is suitable for controlling HVAC systems in commercial or industrial environments where reliable, battery-free operation is required.

What are the specifications of the EMERSON 01F89 211S1 thermostat?

The EMERSON 01F89 211S1 operates on 20V AC with a temperature control range of 45° to 99°F and a differential of 0.6° to 1.5°F. It features manual changeover, slide switch control, Auto-On fan setting, and terminal designations including L. Batteries are not required, and it mounts horizontally.

Where to buy the EMERSON 01F89 211S1 thermostat worldwide?

3G Electric supplies the EMERSON 01F89 211S1 thermostat to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this low voltage thermostat.

How to install the EMERSON 01F89 211S1 thermostat?

Install the EMERSON 01F89 211S1 thermostat by mounting it horizontally on a wall. Connect the 20V AC power supply to the appropriate terminals (C/E/G/L/O/B/R/W2). Ensure the manual changeover switch is set to Cool, Heat, or Off as needed. No batteries are required for operation.

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
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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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