What is the hexagonal part in the middle of the body that has a hole in the middle for?

I holds the cylinder stat together. You need to undo this rand remove the front to wire it

Can it be fitted in a bathroom on pipe work

This is a thermostat for an immersion tank so, NO.

Your text says it is suitable for foam lagged tanks but how does it measure the temperature?

You would have a hole in the lagging just big enough to fit the unit and the sensor on the back of the thermostat would measure the temperature.

Escts Hot Water Cylinder Thermostat

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Description

🔥 Master your hot water game with precision & ease! ⚡

UNIVERSAL FIT - Extra-long mounting strap and spring included for quick surface mounting on any cylinder or pipe size.
EFFORTLESS ADJUSTMENT - Large, clear dial lets you dial in your perfect temperature between 0°C and 80°C with ease.
ENERGY SMART SETTINGS - Optimize energy use by setting between 60°C and 65°C to save on heating bills without sacrificing comfort.
PLUG PLAY INSTALLATION - Designed for fast, hassle-free surface mounting—no batteries, no fuss, just reliable control.
PRECISION TEMPERATURE CONTROL - Bimetallic sensor ensures exact hot water temps for comfort and safety.

The ESCTS Hot Water Cylinder Thermostat by ESI offers precise temperature control with a bimetallic sensor and a large, easy-to-read dial adjustable from 0°C to 80°C. Supplied with an extra-long mounting strap and spring, it fits all domestic hot water cylinders and pipes for quick surface installation. Ideal for energy savings when set between 60°C and 65°C, it supports direct switching of pumps, boilers, or zone valves, making it a smart, efficient upgrade for modern homes.

Specifications

Asin	B00QGKSKBY
Batteries Included	No
Batteries Required	No
Best Sellers Rank	348,090 in DIY & Tools (See Top 100 in DIY & Tools) 3,043 in Central Heating System Accessories
Colour	Clear
Customer Reviews	4.5 4.5 out of 5 stars (55) 4.5 out of 5 stars
Date First Available	27 Nov. 2014
Guaranteed Software Updates Until	unknown
Item Model Number	ESCTS
Item Package Quantity	1
Item Weight	260 g
Manufacturer	ESI - Energy Saving Innovation Controls Ltd
Package Dimensions	12.2 x 7.2 x 5.6 cm; 260 g
Part Number	ESCTS
Plug Profile	Wall Mount
Power Source	Corded Electric
Special Features	Adjustable
Style	Modern
Usage	Boiler
Voltage	230 Volts

Reviews

User

Works well

Bought to replace an ancient one that seemed to want the tank far too hot even on minimum setting. This was easy to install and now my water is a better temperature (and I should be burning less oil). No idea as to the accuracy, but it does what I need.

23.11.2021

User

Ideal item

The item was easy to install and easy to set to required temperature . Super Quick delivery .

20.12.2021

User

Best value

Superior quality an reasonable price

25.04.2016

User

So simple to fit

A straight forward like for like replacement that fitted straight into the existing slot. Brilliant.

28.01.2022

User

Good stat

Fitted and working

22.12.2023

User

Cylinder stat

Good value

4.11.2019

User

Does its job well.

Great stat does the job great..

6.06.2017

User

Five Stars

Excellent product and service.

17.01.2017

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

View all Trustpilot reviews

18533 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

View all Trustpilot reviews