Wireless pool thermometer buying guide

Updated: October 2026

You are in the kitchen with amazon.co.uk open, deciding whether the garden pool is warm enough to open, and every result is called a wireless pool thermometer.

You are in the kitchen with amazon.co.uk open, deciding whether the garden pool is warm enough to open, and every result is called a wireless pool thermometer. Some listings show a screen, some print Wi-Fi, and some show only a float. This wireless pool thermometer buying guide is the order of checks before you pay: the link you will actually read, then open-air range, ingress, power, the box line, and the upper temperature. The wireless pool thermometer comparison holds twelve amazon.co.uk listings extracted on 15 October 2026, from £17.79 to £64.99. Products Compared did not lab-test them. A qualifying purchase can earn a commission at no extra cost to you.

Our top picks

Badge	Product	Link	Open-air range	Ingress as printed	Note	Price	Offer
Best overall	Warmfay Warmfay solar remote	Solar remote	70 m	IP68 in the title, IPX8 in a bullet	7.9	about £26.99	View offer
Preis-Tipp	Longzhuo Longzhuo 433 MHz	433 MHz to an indoor host	60 m	IP67	7.3	about £19.99	View offer
	Inkbird Inkbird IBS-P02R + IBS-M2	Wi-Fi gateway and app	90 m	IPX7	6.4	about £59.99	View offer

Best overall

Warmfay Warmfay solar remote

7.9/10about £26.99

View offer

Preis-Tipp

Longzhuo Longzhuo 433 MHz

7.3/10about £19.99

View offer

Rank 3

Inkbird Inkbird IBS-P02R + IBS-M2

6.4/10about £59.99

View offer

On this page

1.Three kinds of remote read
2.Range, channels and what is actually in the box
3.IP codes and the two temperature numbers
4.Power and the review base

Three kinds of remote read

A local monitor is a float talking by short-range radio to a screen in the house. Longzhuo prints 433 MHz and 60 m. Ofcom’s IR 2030 treats 433.05–434.79 MHz kit as licence-exempt, so you need no licence and you have no protected channel if another device overlaps. A solar remote is that screen plus a panel on the float, which is how Warmfay is described. A Wi-Fi gateway is different: Inkbird’s IBS-M2 and IM-03 need mains and 2.4 GHz, and the IBS-P02R sets print an app, at £59.99 and £64.99. The app stops if the gateway loses power. Aottom, at £17.99, prints Wi-Fi beside a local display, so that line is a kitchen screen. Yallmie and the IBS-P05R print Bluetooth beside a longer claim. Bluetooth is the radio. An app is a separate claim. If you want the number on your phone, use the Wi-Fi pool thermometer versus indoor monitor page.

Range, channels and what is actually in the box

Bullets here state about 50 m to 300 m in open space, a path with no brick in it. Fifteen metres through a cavity wall can be harder than 100 m of lawn, and a cover or a steel tub is harder again. One Insoma UK review failed under 20 feet. One Longzhuo UK review held through glazing at about 70 feet for 11 months. Those notes are not a test of every brand. “Up to 3” or “up to 9” is how many extra sensors the monitor can pair, not how many the parcel holds. One float on the included-components line means one reading. Warmfay’s base station counts as included only when that line names it.

Testsieger

Warmfay Warmfay solar remote

7.9/10about £26.99

View offer

IP codes and the two temperature numbers

BS EN 60529 is a dust and fresh-water code. IPX7 is 1 m for 30 minutes, and IPX8 is continuous immersion only at the maker’s stated depth and time. A leading 6, as in IP68, means dust-tight. Chlorine and salt sit outside the code. A tub you sit in runs about 36–40°C. HSE HSG282’s usual 30–40°C band is for commercial-type spa water, not a reading from your cover. When two ceilings disagree, use the lower figure. Tub buyers should use the wireless thermometer for a hot tub page. A pool you only want above about 20°C does not need that ceiling.

Power and the review base

The included line is where batteries are named or missing. Solar on Warmfay and the IBS-P05R still needs sun, so a float under a cover can go dark. UK reviews of the IBS-M2 say the gateway has no battery and can lose its setup in a power cut. Adding a socket in a wet zone is an electrician’s job. The thinnest kept row is 4.6 from three reviews. IBS-P01R is 3.8 from 250. IBS-P03R at £63.74 has no review line. The float does not supervise swimmers or read chlorine or pH. Under the Consumer Rights Act 2015, section 22, you have 30 days to reject. Entry is about £18–£22, mid about £26–£30, premium about £59–£65. Premium here is a gateway or a solar remote, not a longer guarantee.

Common questions

Do I need an app or is a screen in the kitchen enough?

A screen is enough when you read the pool from the house before you go outside. An app fits when the listing prints an app and a gateway, as the IBS-P02R sets do, and you can give that gateway a mains socket. The screen will not follow you away from home.

Why does the listing say 100 m if my kitchen is 15 m through brick?

The 100 m figure is an open-air claim. Brick, a cavity wall, a hot-tub cover and a steel shell sit outside that sentence. Fifteen metres through the house can be a worse path than a longer run across the lawn. One Insoma UK review failed under 20 feet, and one Longzhuo UK review held through glazing at about 70 feet. Put the monitor on the pool side of the house and treat a silent first day as the limit of that wall.

Is IP68 safe to leave in chlorine all summer?

IP68 means dust-tight plus continuous immersion at the depth and time the maker states. The code is a fresh-water test, so chlorine, bromine and salt are outside it. Warmfay prints IP68 in the title and IPX8 in a bullet, and neither line states a depth. IPX7, which the IBS-P02R sets print, is 1 m for 30 minutes. Fogging can still show up inside the 30-day right to reject.

What does “up to 9 channels” mean if the box has one float?

The monitor can listen for more sensors than the parcel contains. “Up to 9” or “up to 3” is a pairing limit. IBS-P01R is described as up to three floats, and you still count the floats on the included-components line. One named float means one water reading until you buy extras that pair with that monitor.

Are the batteries in the box?

The cells are in the box when the included-components line names them. Titles that say wireless or solar often leave the batteries off that line. Warmfay’s base station is included only when the line lists a receiver. Solar still needs the panel in the sun, including when a cover shades it all day.

Why do two temperature ceilings disagree?

Sellers print a friendly bullet and a technical upper rating, and the two lines can differ. ORIA shows 60°C in the bullet and 70°C as the upper rating, so use the lower figure for a hot tub at about 38–40°C. IBS-P02R’s technical ceiling of 100°C clears that band on paper and leaves the cover unanswered. When the numbers clash, keep both and decide on the lower one.

Best wireless pool thermometer

Outdoor socket for a hot tub