Multi-Zone Thermostats
Choose smart thermostat replacements for each existing low-voltage HVAC zone, and avoid confusing room sensors or fans with true zone control.
Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built-in WiFi
The Venstar T7850 Colortouch thermostat is built for the modern home, especially if you already use smart assistants like Alexa. Instead of just setting a schedule, you can simply speak a command to adjust the temperature while you're cooking dinner or relaxing on the couch.
We installed this in a house with a heat pump, and the 4-stage heat and 2-stage cooling gave us precise control over our dual-fuel system. The 7-day programming let us set a tighter schedule for weekdays and a looser one for weekends without extra effort. The color touchscreen is responsive and easy to read from across the room.
The built-in WiFi means you can check and change the temperature from your phone, whether you're at the office or on vacation. Auto-changeover keeps the system from fighting itself, so you don't hear the heat kicking on when it's just a cool morning. This is a solid upgrade for anyone wanting smart comfort without giving up fine-grained control.
Features
- 7-Day programmable with auto-changeover
- 4-stage heat, 2-stage cooling
- Works with Alexa for voice control
- Replaces T5900 and Acc0454
- Built-in WiFi for remote control
General specs
- Brand: Venstar
- Model: T7850
- Seller: Retailer
- ID: B011OJMEA4
- Dimmer Type: Lamp Dimmer
- Programmable: 7-Day
- Control Method: Pico remote, Smart Bridge, Voice Control
- Auto Changeover: Yes
- Number Of Stages: 4-State Heat, 2-Stage Cooling
- WiFi Connectivity: Yes
- (Led) Load Maximum: 100 W
- Bulb Supported Types: Dimmable LED, CFL, Incandescent, Halogen
- Smart Home Compatibility: Amazon Alexa, Apple HomeKit, Google Assistant, Nest, Serena shades, Sonos
- Bulbs Circuit Maximum Per: 17
- (Incandescent) Load Maximum: 300 W
- First listed by seller: May 28, 2026
If you are interested in more details, you can find full information on the seller's page.
Partner offer temporarily unavailable
Shipping options
Delivery to 
Russia
Russia
Available
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Venstar T7850 Built-in WiFi for remote control
|
vine TJ-225B White Programmable 7-day/8 period scheduling
|
Smart Digital Thermostat 7 day programmable
|
PRO1 IAQ T855iSH Large 8" Backlit Display
|
White-Rodgers 1F95-1277 White Large, easy-to-read touchscreen display
|
Braeburn 7205 White Programmable scheduling
|
|
| Brand | Vine | White-Rodgers | Braeburn | |||
| Model | T7850 | TJ-225B | T855iSH | 1F95-1277 | 7205 | |
| Color |
|
|
|
|||
| Rating |
|
|
|
|
|
|
| Price | RUB 16,796.76 | RUB 4,139.82 | RUB 3,196.07 | RUB 12,719.44 | RUB 13,397.57 | RUB 5,233.56 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 24, 2026 | May 29, 2026 | May 20, 2026 | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 |
Venstar T7850 Built-in WiFi for remote control
RUB 16,796.76
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.