---
product_id: 17132005
title: "Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi (Replaces T5900 and Acc0454)"
brand: "venstar"
price: "$694"
currency: NZD
in_stock: true
reviews_count: 8
category: "Venstar"
url: https://www.desertcart.nz/products/17132005-venstar-t7850-colortouch-7-day-programmable-thermostat-with-built-in
store_origin: NZ
region: New Zealand
---

# Built-in WiFi for remote control 7-day programmable scheduling Alexa & voice assistant compatible Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi (Replaces T5900 and Acc0454)

**Brand:** venstar
**Price:** $694
**Availability:** ✅ In Stock

## Summary

> 🌡️ Elevate your smart home vibe with Venstar’s sleek, voice-ready thermostat!

## Quick Answers

- **What is this?** Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi (Replaces T5900 and Acc0454) by venstar
- **How much does it cost?** $694 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/17132005-venstar-t7850-colortouch-7-day-programmable-thermostat-with-built-in)

## Best For

- venstar enthusiasts

## Why This Product

- Trusted venstar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customizable Display:** Personalize your thermostat screen with your own photos, blending tech with your style.
- • **Smart Climate Command:** Control your home temperature from anywhere with built-in WiFi and smartphone access.
- • **Energy-Savvy Scheduling:** 7-day programmable settings optimize heating and cooling to save energy without sacrificing comfort.
- • **Universal Compatibility:** Supports 4-state heat and 2-stage cooling, plus works with over 1,000 LED bulbs for perfect dimming.
- • **Voice-Activated Comfort:** Seamlessly integrates with Alexa, Apple HomeKit, Google Assistant, and more for effortless voice control.

## Overview

The Venstar T7850 is a 7-day programmable thermostat featuring built-in WiFi for remote smartphone and computer control. Compatible with Alexa, Apple HomeKit, Google Assistant, and more, it supports advanced heating and cooling stages and offers superior LED dimming performance. Its customizable digital display and broad smart home integration make it a top-tier choice for modern, energy-conscious homes.

## Description

Brand New Venstar T7850 Thermostat. This thermostat come with built in WiFi to connect to your home network. Once connected you will be able to control your thermostat from your smart phone or computer. You can also customize the thermostat by adding your own pictures just like a digital picture frame. The thermostat does require the use of a common wire for the thermostat to power on, for more info on this you can visit Venstar's youtube channel for some how to videos. Now compatible with Alexa to ensure the perfect temperature anywhere in your home.

Review: Great product and easy to install - Great product, easy to install
Review: Bye Bye Big Tech - Just what I was looking for to continue weening my smart home off of Silicon Valley. Connects seamlessly with Home Assistant, meaning I can control the temperature without going through third-party servers. The only complaint I have is I still had to register an account just to use network time. NTP is an open protocol. There should be no reason to create any account on any external service.

## Features

- Works with Alexa for voice control (Alexa device sold separately).
- Provides the best dimming performance for LED bulbs. Tested and recommended for use with over 1,000 bulbs (for recommended LEDs, please see "Technical Specification")
- Works with up to 100W of dimmable LED/CFL or 300W incandescent/halogen bulbs
- Lamp Dimmer simply plugs into a standard outlet and can be used with up to two lamps
- Dimmer controls up to 17 bulbs per circuit (based on 8.5W LED bulbs, 60W incandescent equivalent)
- Turns lights on/off or raise/lower to adjust brightness using included Pico remote
- Connects with more leading smart home brands (including desertcart Alexa, Apple HomeKit, the Google Assistant, Nest, Serena shades, and Sonos) than any other leading smart lighting control brand (Smart Bridge requried)
- 7-Day programmable, Auto-changeover
- Built In Wifi To connect to your smart phone Or Computer
- 4 State Heat 2 Stage Cooling

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B011OJMEA4 |
| Backlight | Yes |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #208,515 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #310 in Home Programmable Thermostats |
| Brand | Venstar |
| Color | White |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | Voice |
| Control Type | Remote Control |
| Controller Type | Amazon Alexa, Apple HomeKit, Vera, nest |
| Customer Reviews | 4.3 4.3 out of 5 stars (68) |
| Date First Available | July 15, 2015 |
| Display Type | Digital |
| Included Components | Pico remote, Temperature Sensor |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 12 ounces |
| Item model number | T7850 |
| Manufacturer | Venstar |
| Mounting Type | Wall Mount |
| Part Number | T7850 |
| Power Source | Electric |
| Product Dimensions | 2 x 6.2 x 4.8 inches |
| Shape | Rectangular |
| Size | 6.25 X 4.75 X 2" |
| Special Feature | Programmable |
| Special Features | Programmable |
| Specific Uses For Product | Heating, Cooling |
| Style | Digital,Wifi |
| Temperature Control Type | programmable |
| Type of Bulb | LED |
| UPC | 716670968600 384929207215 |
| Voltage | 24 Volts |

## Product Details

- **Brand:** Venstar
- **Color:** White
- **Controller Type:** Amazon Alexa, Apple HomeKit, Vera, nest
- **Special Feature:** Programmable
- **Specific Uses For Product:** Heating, Cooling

## Images

![Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi (Replaces T5900 and Acc0454) - Image 1](https://m.media-amazon.com/images/I/41WLty2xNbL.jpg)

## Questions & Answers

**Q: Is Venstar T7850 Alexa compatible**
A: I found this on Venstar web site http://venstar.com/smart/alexa/tells you everything to do with it

**Q: Has your Wifi connectivity been reliable with your Venstar thermostat? I see a lot of complaints but wonder if it has improved recently?**
A: I own 2 Venstar T78850 Thermostats.   Which are located in different homes.  Both have no connect Wi-Fi connectivity issues.  The only time I lose connectivity is when the internet service to the house fails, which is not a Wi-fi issue, but an issue with the Internet service itself.

**Q: is it z-wave compatible?**
A: I do not believe so but I would go to the Venstar website and email technical support with your question.

**Q: Does it support apple home kit?**
A: It works with Alexa so I would guess yes.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product and easy to install
*by A***R on June 19, 2025*

Great product, easy to install

### ⭐⭐⭐⭐ Bye Bye Big Tech
*by Q***P on December 29, 2025*

Just what I was looking for to continue weening my smart home off of Silicon Valley. Connects seamlessly with Home Assistant, meaning I can control the temperature without going through third-party servers. The only complaint I have is I still had to register an account just to use network time. NTP is an open protocol. There should be no reason to create any account on any external service.

### ⭐⭐⭐⭐⭐ Three Cheers for Amazon!
*by G***Y on January 26, 2016*

I purchased the Venstar T7850 Colortouch in November for use in my vacation home. After installing it I found the thermostat had a problem and did not communicate with their cell phone app. I contacted Venstar support and explained the problem and even included pictures from the thermostat, but they never replied to my email. As a last resort I contacted Amazon Support. They immediately replied telling me to return the thermostat to them for testing. Within a week I got a reply that a replacement was being shipped. The replacement thermostat worked perfectly as advertised. It's really handy to check the temperature of a home 200 miles away and know the furnace is working. Last week I used the app to turn the temperature up (the vacation home is in Northern Michigan) so it was warm and comfy when I arrived. A big THANK YOU to AMAZON for their fast and helpful support!

## Frequently Bought Together

- Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi (Replaces T5900 and Acc0454)
- Venstar Acc-TSENWIFIPRO Pro Wi-Fi Wireless Temperature Sensor

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-08*