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PRO1 IAQ T621-2 Digital Thermostat, Manual Heat/Cool, 18V AC - Digital Thermostats
PRO1 IAQDigital Thermostats

PRO1 IAQ T621-2 Digital Thermostat, Manual Heat/Cool, 18V AC

The PRO1 IAQ T621-2 is a square, push-button digital thermostat for heat-or-cool applications, operating on 18V AC with manual changeover and system settings for Cool, Emergency Heat, Heat, and Off. It features an…

SKU 3G-OTH-70492

Also listed as: T6212 · T621 2

Brand
PRO1 IAQ
Item
T621-2 Digital Thermostat, Manual Heat/Cool, 18V AC
Category
Digital Thermostats
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

PRO1 IAQ
Manufacturer Part Number
T621-2
Type
Manual, B/C/E/G/O/R/W2/Terminal Designations, Auto-On
Shape
Square
Voltage
18V AC
Digit Size
Easy Read
Application
Heat or Cool
Control Type
Push Button
Fan Settings
Auto-On
Key Features
Easy Access Battery Compartment
Changeover Type
Manual
System Settings
Cool-Emergency Heat-Heat-Off
Mounting Direction
Horizontal
Terminal Designations
B
Temperature Differential
0.2°F to 2°F
Temperature Control Range
44° to 90°F

Technical Documents

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PRO1 IAQ Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PRO1 IAQ T621-2 is a square, push-button digital thermostat for heat-or-cool applications, operating on 18V AC with manual changeover and system settings for Cool, Emergency Heat, Heat, and Off. It features an easy-access battery compartment, Auto-On fan setting, a temperature control range of 44° to 90°F, and a selectable temperature differential of 0.2°F to 2°F. Terminal designations include B, and the thermostat mounts horizontally.

Frequently Asked Questions

What is the PRO1 IAQ T621-2 thermostat used for?

The PRO1 IAQ T621-2 is a digital thermostat for heat-or-cool applications in residential or light commercial HVAC systems. It provides manual changeover between Cool, Emergency Heat, Heat, and Off, with an Auto-On fan setting. It is suitable for 18V AC systems and includes an easy-access battery compartment.

What are the specifications of the PRO1 IAQ T621-2 thermostat?

The PRO1 IAQ T621-2 operates on 18V AC with a temperature control range of 44° to 90°F and a selectable temperature differential of 0.2°F to 2°F. It features push-button controls, a square shape, horizontal mounting, and terminal designations including B. System settings are Cool, Emergency Heat, Heat, and Off with manual changeover.

Where to buy the PRO1 IAQ T621-2 thermostat worldwide?

3G Electric supplies the PRO1 IAQ T621-2 thermostat to customers 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; we source and deliver this thermostat to meet your project needs.

How to install the PRO1 IAQ T621-2 thermostat?

To install the PRO1 IAQ T621-2, mount the thermostat horizontally on a wall, connect the 18V AC power and B terminal wiring per system requirements, and set the temperature differential (0.2°F to 2°F) and system settings (Cool, Emergency Heat, Heat, Off). Always follow local electrical codes and the manufacturer's instructions for safe installation.

Used in

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PRO1 IAQ Products

3G Electric supplies PRO1 IAQ 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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