vine ST300 Wi-Fi Smart Thermostat with Large Knob

The vine ST300 smart thermostat combines Wi-Fi control, a large physical knob and a 3.5-inch touchscreen with programmable scheduling. It requires a C-wire, so confirm your HVAC wiring and system compatibility before purchase.

At a glance

A physical dial and touchscreen provide on-device adjustment, alongside app and voice controls.
The listing claims compatibility with Alexa and Google Assistant, plus remote control through an app.
7-day scheduling and Auto Home/Away mode are listed for managing temperature routines.
A built-in nightlight is described as dimmable with multiple brightness levels.
The listing describes support for several 24V AC system types, but requires a C-wire.

Price

$98.99Save 34%

Reference price: ~~$149.99~~

Price checked: Nov 14, 2026

View offer

Often bought together

C Wire Adapter for Vine Smart Thermostat, for The air Conditioning System Without C-Wire, Programmable WiFi Thermostat Accessory, Only Compatible with Vine Thermostat

$19.99

Pros and cons

Pros

The combination of a physical knob, touchscreen, app and voice control gives buyers several listed ways to adjust settings.
A 7-day schedule and Auto Home/Away mode support programmed temperature changes.
The built-in adjustable nightlight may make the display easier to use in a dark room.

Cons

A C-wire is required, which may mean this thermostat is unsuitable for homes without compatible wiring unless the wiring is addressed separately.

Technical specifications

11 specifications

Identity
Brand	vine
Model	ST300

Display
Screen size	3.5 inches
Screen technology listed	LCD

Connectivity and controls
Wireless connection listed	Wi-Fi
Control methods listed	App, Remote, Touch, Voice

Power and installation
Power configuration	Hardwired
Mounting type	Wall Mount

Dimensions and form
Form factor	Square
Dimensions	0.91"D x 4.33"W x 3.85"H
Weight	9.6 ounces

What to know before buying

The listing says compatibility covers 90% of 24V AC systems and names conventional 2H/2C and heat-pump 2H/2C systems with auxiliary or emergency heat, but exact compatibility depends on the home’s wiring and HVAC setup. It also claims installation can take 30 minutes or less, which is not a guaranteed installation time.

What’s in the box

Included

Flathead screwdriver, 1
User manual
Vine thermostat, 1
Wall plate, 1
Wire labels, 1
Jumper wire, 1

Who is it for?

A good fit for

Households with compatible 24V HVAC wiring and a C-wire that want app, voice and manual thermostat controls.
Buyers who prefer a physical temperature knob alongside a touchscreen.
Homes where weekly schedules, Auto Home/Away settings and a nightlight are useful.

Less suited to

Homes without a C-wire unless the wiring can be made compatible.
Buyers who cannot confirm that their HVAC system matches the listed compatibility guidance.

vine ST300 Wi-Fi Smart Thermostat with Large Knob · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 23 ratings

5 stars76%76%
4 stars17%17%
3 stars7%7%
2 stars0%0%
1 star0%0%

The supplied evidence contains aggregate ratings but no customer-comment summary. The distribution is mostly in the five- and four-star categories, with some three-star ratings, so it indicates generally favorable but not uniformly positive feedback. The small rating sample does not reveal what customers liked or disliked, or establish how the thermostat performs with a particular HVAC system.

Frequently asked questions

Does the vine ST300 require a C-wire?

Yes. The listing says a common wire (C-wire) is required for all vine thermostats.

Which systems does the listing say the ST300 supports?

It describes compatibility with 24V AC systems, including conventional 2H/2C, heat-pump 2H/2C with auxiliary or emergency heat, and heat-only or cool-only systems. Confirm your specific wiring and equipment before buying.

Can the thermostat be controlled remotely?

The listing claims app control from anywhere, as well as voice control with Alexa and Google Assistant.

What scheduling features are listed?

The listing describes a 7-day schedule and Auto Home/Away mode.