---
product_id: 164486207
title: "ESI Controls Electronic Digital Room Thermostat with TPI and Delayed Start"
brand: "esi - energy saving innovation controls"
price: "R1214"
currency: ZAR
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.za/products/164486207-esi-controls-electronic-digital-room-thermostat-with-tpi-and-delayed
store_origin: ZA
region: South Africa
---

# Delayed start feature Precision TPI technology Large, clear adjustable dial ESI Controls Electronic Digital Room Thermostat with TPI and Delayed Start

**Brand:** esi - energy saving innovation controls
**Price:** R1214
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay ahead of the curve with smart, stylish climate control!

## Quick Answers

- **What is this?** ESI Controls Electronic Digital Room Thermostat with TPI and Delayed Start by esi - energy saving innovation controls
- **How much does it cost?** R1214 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/164486207-esi-controls-electronic-digital-room-thermostat-with-tpi-and-delayed)

## Best For

- esi - energy saving innovation controls enthusiasts

## Why This Product

- Trusted esi - energy saving innovation controls brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Delayed Start:** Optimize energy use by scheduling your heating start time.
- • **Intuitive LCD Display:** Effortlessly monitor and adjust settings with a crisp, clear screen.
- • **Sleek & Minimalist Design:** Glossy white finish fits seamlessly into any modern workspace or home.
- • **Energy Certified Efficiency:** Certified to help reduce your carbon footprint while saving costs.
- • **Precision Temperature Control:** Maintain your perfect climate with ±0.6°C accuracy.

## Overview

The ESI Controls Electronic Digital Room Thermostat ESRTD3 offers precise temperature management with TPI technology and ±0.6°C accuracy. Featuring a large adjustable dial, clear LCD display, and a convenient delayed start function, it combines energy efficiency certification with a sleek, glossy white design. Ideal for modern homes and offices seeking smart, reliable HVAC control.

## Description

Full description not available

## Features

- Large, clear adjustable dial
- TPI technology
- Delayed start
- LCD display
- Temperature control accuracy of +/-0.6°C

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ESI Controls |
| Part Number | ESRTD3 |
| Product Dimensions | 11.4 x 9.8 x 4.8 cm; 500 g |
| Item model number | ESRTD3 |
| Colour | White |
| Style | Simple |
| Finish | glossy |
| Shape | Rectangular |
| Power Source | Corded Electric |
| Voltage | 230 Volts (AC) |
| Item Package Quantity | 1 |
| Display style | LCD |
| Plug profile | Wall Mount |
| Certification | energy |
| Special Features | Adjustable |
| Usage | Boiler |
| Included Components | 1 x Thermostat |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 500 g |

## Product Details

- **Brand:** ESI - Energy Saving Innovation Controls
- **Controller type:** Mechanical knob
- **Special feature:** Adjustable
- **Colour:** White
- **Specific uses for product:** Boiler
- **Temperature Control Type:** automatic
- **Connectivity technology:** Wi-Fi
- **Included components:** 1 x Thermostat
- **Power source:** Corded Electric
- **Item weight:** 0.5 Kilograms

## Images

![ESI Controls Electronic Digital Room Thermostat with TPI and Delayed Start - Image 1](https://m.media-amazon.com/images/I/51Qzd32ZYDL.jpg)

## Questions & Answers

**Q: What batteries does it take?**
A: Model I have is hard wired - so no batteries.

**Q: How to pair to relay box**
A: It's basically a straight replacement for your existing thermostat.  If you don't have an existing thermostat and are trying to do this yourself then the answer depends on your relay box / programmer etc.

**Q: How to hard wire neutral live and N/O**
A: Sorry but it was fitted by our plumber who was here servicing our boiler!

**Q: If you programme it to 20 is that actually the right setting**
A: Yes. The thermostat will prompt the boiler to fire until the desired set temperature is reached and the moon cycle to maintain that temperature.  What is changeable is the number of potential firing cycles in a given period of time.
The instructions and explanations provided are quite comprehensive.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great stat
*by S***. on 29 June 2024*

Easy to fit with value for money

### ⭐⭐⭐⭐ Easy to fit & does the job
*by M***Y on 27 January 2021*

Easy to fit & does the job, replaced the existing analogue bi-metal strip room stat in under 20 minutes with no problems. Mounting holes are a little tight & may benefit from slightly enlarging to get exactly level when mounted. Seems to keep a good temperature range. Only negative comments are that the led display is not illuminated at all so can be difficult to read if in a dark area, also there is a distinct audible click as the unit cuts in / out at times. Suspect that there is a small relay actually switching the line out.

### ⭐⭐⭐⭐⭐ Fab unit
*by M***N on 9 April 2025*

Received all good thanks do you sell the one with two wires and battery operated

## Frequently Bought Together

- ESI - Energy Saving Innovation Controls ESRTD3 Digital Room Thermostat with Delayed Start, White
- ESI - Energy Saving Innovation Controls ESRTERFW Wireless Electronic Room Thermostat with LCD Display, Multicolor
- ESi - 2 Port 22mm Motorised Zone Valve (Replaces V4043H1056) ESZV222LM

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-14*