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PRO1 IAQ T721 Manual Changeover Digital Thermostat - Digital Thermostats
PRO1 IAQDigital Thermostats

PRO1 IAQ T721 Manual Changeover Digital Thermostat

The PRO1 IAQ T721 is a square, push-button digital thermostat for heat-or-cool applications. It operates on 18V AC with a manual changeover and system settings for Cool, Emergency Heat, Heat, and Off. Key features…

SKU 3G-OTH-70402

Also listed as: T 721 · T-721

Brand
PRO1 IAQ
Item
T721 Manual Changeover Digital Thermostat
Part Number
T721
Category
Digital Thermostats
Available to Order
Also known as:T721PRO1 IAQ
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

PRO1 IAQ
Manufacturer Part Number
T721
Type
Manual, B/C/G/O/R/W2/W/E/Terminal Designations
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
R
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 T721 is a square, push-button digital thermostat for heat-or-cool applications. It operates on 18V AC with a manual changeover and system settings for Cool, Emergency Heat, Heat, and Off. Key features include an easy-access battery compartment, a 0.2°F to 2°F temperature differential, and a 44° to 90°F control range.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the PRO1 IAQ T721 thermostat used for?

The PRO1 IAQ T721 is a manual-changeover digital thermostat for heat-or-cool applications in residential or light commercial HVAC systems. It controls temperature from 44° to 90°F with a 0.2°F to 2°F differential, supporting Cool, Emergency Heat, Heat, and Off settings.

What are the specifications of the PRO1 IAQ T721 thermostat?

The PRO1 IAQ T721 operates on 18V AC, has a square push-button design, manual changeover, and terminal designations including R. It features an easy-access battery compartment, Auto-On fan setting, and a temperature control range of 44° to 90°F with a 0.2°F to 2°F differential.

Where to buy the PRO1 IAQ T721 thermostat worldwide?

3G Electric supplies the PRO1 IAQ T721 thermostat to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this thermostat to your facility, regardless of location.

How to install the PRO1 IAQ T721 thermostat?

Install the PRO1 IAQ T721 by mounting it horizontally on a wall, connecting the 18V AC power and R terminal wire, and setting the manual changeover to Heat or Cool. Always follow the manufacturer's wiring diagram and turn off power at the breaker before installation.

Used in

Common applications for PRO1 IAQ
Commercial HVAC maintenance — PRO1 IAQ T855SH thermostat for multi-stage heat pump control in office buildings
Facility energy management — PRO1 IAQ T805 programmable thermostat for 7-day scheduling in retail spaces
Light commercial retrofit — PRO1 IAQ T501M analog thermostat for simple heat/cool control in small shops
Indoor air quality monitoring — PRO1 IAQ R751WO wireless sensor for temperature and motion detection in conference rooms
Heat pump system replacement — PRO1 IAQ T625-2 thermostat for 2H/1C heat pump staging in residential units
Thermostat guard replacement — PRO1 IAQ T150K replacement keys for securing T150 plastic guards in public areas
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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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