---
product_id: 49288070
title: "ESI - Energy Saving Innovation Controls ESRTM Mechanical Room Thermostat"
brand: "witpoce"
price: "€ 32.82"
currency: EUR
in_stock: true
category: "Witpoce"
url: https://www.desertcart.pt/products/49288070-esi-energy-saving-innovation-controls-esrtm-mechanical-room-thermostat
store_origin: PT
region: Portugal
---

# Quick 2-wire install Durable mechanical dial Ideal for new builds & replacements ESI - Energy Saving Innovation Controls ESRTM Mechanical Room Thermostat

**Brand:** witpoce
**Price:** € 32.82
**Availability:** ✅ In Stock

## Summary

> 🔥 Dial into comfort with effortless energy savings!

## Quick Answers

- **What is this?** ESI - Energy Saving Innovation Controls ESRTM Mechanical Room Thermostat by witpoce
- **How much does it cost?** € 32.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/49288070-esi-energy-saving-innovation-controls-esrtm-mechanical-room-thermostat)

## Best For

- witpoce enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Reliable, simple, and durable mechanical dial ensures consistent performance 🔧
- • **Energy-Smart Design:** Mechanical control that supports energy saving without complex programming 💡
- • **Effortless 2-Wire Setup:** Volt-free contacts and easy-fit backplate make installation a breeze ⚡
- • **Universal Compatibility:** Perfect replacement for any 2 or 3-wire thermostat or new build project 🏗️
- • **Clear & Intuitive Control:** Large, easy-to-read adjustable dial for precise temperature management 🎯

## Overview

The ESI ESRTM Mechanical Room Thermostat offers a quick 2-wire installation with volt-free contacts and an easy-fit backplate. Featuring a large, clear adjustable dial, this durable and reliable thermostat is an ideal replacement for any 2 or 3-wire system or new build, providing simple manual temperature control for efficient boiler operation.

## Description

From the manufacturer ESI - Energy Saving Innovation Controls ESRTM Mechanical Room Thermostat Specification ESRTM details Room temperature dial. Thermostat. Surface or pattress mounted. Double insulated ESRTM. Suitable for systems with either a combination or normal boiler. Durability Reliable, simple and long lasting. Description Application Ideal replacement for any 2 or 3 wire thermostat or new build. Installation Quick 2 wire installation with Volt Free contacts and easy fit back plate.

## Features

- quick 2 wire installation with volt free contacts and easy fit back plate
- reliable, simple and durable traditional product with large, clear adjustable dial
- exceptional value and an ideal replacement for any 2 wire thermostat or new build

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00QGKSTD8 |
| Backlight | No |
| Best Sellers Rank | 39,469 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Home Non-Programmable Thermostats |
| Brand Name | WITPOCE |
| Colour | Clear |
| Connectivity Protocol | BACnet MS/TP |
| Connectivity Technology | Wi-Fi |
| Control Method | Touch |
| Control Type | Dial Control |
| Controller Type | Mechanical knob, Push Button |
| Country Of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,142) |
| Display Type | Analog |
| Global Trade Identification Number | 00095225343544 |
| Included Components | Back plate, Volt Free contacts |
| Item Shape | Square |
| Item Type Name | Mechanical Room Thermostat |
| Manufacturer | ESI - Energy Saving Innovation Controls Ltd |
| Manufacturer Part Number | ESRTM |
| Model Number | ESRTM |
| Mounting Type | Wall Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Corded Electric |
| Product Style | Modern |
| Special Features | Temperature Display |
| Specific Uses For Product | Boiler |
| Temperature Control Type | Manual |
| UPC | 095225343544 |
| Unit Count | 1.0 count |
| Voltage | 230 Volts |

## Product Details

- **Brand:** WITPOCE
- **Colour:** Clear
- **Connectivity technology:** Wi-Fi
- **Controller type:** Mechanical knob, Push Button
- **Included components:** Back plate, Volt Free contacts
- **Power source:** Corded Electric
- **Special feature:** Temperature Display
- **Specific uses for product:** Boiler
- **Temperature Control Type:** Manual
- **Voltage:** 230 Volts

## Images

![ESI - Energy Saving Innovation Controls ESRTM Mechanical Room Thermostat - Image 1](https://m.media-amazon.com/images/I/71THAVyK3fL.jpg)

## Questions & Answers

**Q: what cable do I need for this I know I need a wire**
A: Very low resistant two core wire.  
Mike

**Q: what is volt-free contacts means? Please explain because my central heating at the designated contacts for room thermostat I found 220v?**
A: Volt free contacts are also called ‘dry contacts’ and it means there is no voltage produced at the connections. Think of it like a light switch, the power comes along one wire, and the switch transfers it to the other wire, if you don’t have the ‘live’ wire connected, then the switch doesn’t have power to pass on

**Q: How easy to install**
A: Quite easy only two wires to the connected it's alright for a do-it-yourself

**Q: Why am I only aloud to buy 8 thermostats , I need 11**
A: Perhaps they only have 8 in stock????

## Frequently Bought Together

- ESI - Energy Saving Innovation Controls ESRTM Mechanical Room Thermostat
- ESI ES2247B 2-Channel Multi Purpose Programmer (New Model)
- ESI - Energy Saving Innovation Controls ESRTERFW Wireless Electronic Room Thermostat with LCD Display, Multicolor

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**Shop now:** [https://www.desertcart.pt/products/49288070-esi-energy-saving-innovation-controls-esrtm-mechanical-room-thermostat](https://www.desertcart.pt/products/49288070-esi-energy-saving-innovation-controls-esrtm-mechanical-room-thermostat)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-01*