---
product_id: 81089974
title: "Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool"
brand: "pro1 iaq"
price: "€ 284.34"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/81089974-pro1-t855ish-wifi-thermostat-7-day-programmable-stages-4-heat
store_origin: NL
region: Netherlands
---

# 24VAC Power 7-Day Programmable 44-90°F Control Range Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool

**Brand:** pro1 iaq
**Price:** € 284.34
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate Your Comfort Game!

## Quick Answers

- **What is this?** Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool by pro1 iaq
- **How much does it cost?** € 284.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/81089974-pro1-t855ish-wifi-thermostat-7-day-programmable-stages-4-heat)

## Best For

- pro1 iaq enthusiasts

## Why This Product

- Trusted pro1 iaq brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Scheduling:** Effortlessly program your week with 5-1-1 or 7-day options.
- • **Energy Efficiency:** Optimize your energy use with programmable settings and filter indicators.
- • **Dual Stage Control:** Manage up to 4 heat and 2 cool stages for ultimate comfort.
- • **Versatile Mounting:** Install horizontally or vertically to fit your space perfectly.
- • **User-Friendly Display:** Bright LCD screen for easy reading and navigation.

## Overview

The Pro1 T855iSH WiFi Thermostat is a cutting-edge, 7-day programmable device designed for optimal temperature control in your home. With the ability to manage up to 4 heating and 2 cooling stages, it ensures your environment is always just right. Its user-friendly LCD display and versatile mounting options make it a perfect fit for any space, while energy-efficient features help you save on utility bills.

## Description

Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool

## Features

- Price For: Each Voltage: 24VAC Power Method: Hardwired Remote Sensing Capability: No Mounting Location: Wall Includes: 2 AA Batteries, Manual/Install Guide, Screws and Wall Anchors Dehumidification Control: No Temporary Temperature Hold: Yes Height: 4-13/32" Control Range: 44 Degrees to 90 Degrees F Humidification Control: No Batteries Included: No Width: 4-45/64"
- Programs per Week: 5-1-1, 7, or Nonprogrammable Temporary Program Override: Yes For Use With: Heating and Cooling Display Type: LCD Color: White Battery Backup: No Temp. Settings per Day: 4 Low Battery Indicator: No 750mV Compatible: No Mounting Type: Horizontal or Vertical Item: Low Voltage WiFi Thermostat Depth: 1" Dual Transformer Compatible: Yes Display Color: Blue Features: 4H/2C WiFi
- Filter Indicator: Yes Terminal Designations: RC, RH, C, O, B, G, Y, Y2, W/E, W2 System Switching: Auto-Heat-Cool-Off-Emergency Fan Switching: Auto-On-Indoor Air Quality Stages Heat: 4 Heat Pump or 2 Conventional Stages Cool: 2 Programmable Fan: Yes Key Pad Lockout: Yes Display Size: 8 sq. in. Temperature Limiting: Yes Automatic Changeover: Yes Country of Origin (subject to change): China

## Images

![Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool - Image 1](https://m.media-amazon.com/images/I/51TIpGlBKiL.jpg)
![Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool - Image 2](https://m.media-amazon.com/images/I/51wEvZRmM0L.jpg)
![Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool - Image 3](https://m.media-amazon.com/images/I/510U488nR9L.jpg)
![Pro1 T855iSH WiFi Thermostat, 7 Day Programmable, Stages 4 Heat/2 Cool - Image 4](https://m.media-amazon.com/images/I/61F2lJpfqPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    super easy swap if you currently have another Pro1 thermostat
  

*by B***R on Reviewed in the United States 🇺🇸 on December 11, 2022*

super easy swap if you currently have another Pro1 thermostat

### ⭐ 1.0 out of 5 stars







  
  
    Call missing battery terminals (on two thermostats)
  

*by D***. on Reviewed in the United States 🇺🇸 on May 18, 2023*

I am very disappointed, I would weigh negative stars if I could. I ordered this thermostat once and it came with new battery terminals, the screen smashed, and multiple pieces missing. I exchanged it and got a second one that also came without battery terminals. This is extremely frustrating given that I could buy a smart thermostat cheaper than this that actually works.  DO NOT BUY!!!!!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    This requires a newer system that provides power to the thermostat
  

*by J***N on Reviewed in the United States 🇺🇸 on December 20, 2021*

It's always on. The scheduler works well

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**Shop now:** [https://www.desertcart.nl/products/81089974-pro1-t855ish-wifi-thermostat-7-day-programmable-stages-4-heat](https://www.desertcart.nl/products/81089974-pro1-t855ish-wifi-thermostat-7-day-programmable-stages-4-heat)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-24*