Overview
The GroEgg2 does two jobs at once, which is why it has sold so well: it tells you the nursery temperature at a glance by changing colour, and it works as a gentle nightlight. With more than 6,400 ratings at 4.4 it is one of the best-established baby-room products in the UK. At £19.98 it is not the cheapest way to measure temperature, so here is what you are actually paying for.
At a glance - Does
- Colour-changing room thermometer + nightlight
- Colours
- Four, matched to temperature bands
- Display
- LED shows the exact temperature
- Best for
- Reassurance at a glance in the dark
- Rating
- 4.4 / 5 from 6,400+ reviews
- Typical price
- £19.98 (check live price below)
Why nursery temperature matters
Safer-sleep guidance in the UK recommends keeping a baby's room at a comfortable temperature, generally cited as around 16 to 20C, because overheating is a recognised risk factor for SIDS. That is the reason a room thermometer became a standard nursery item rather than a gadget.
The GroEgg2's contribution is that you can read the room from the doorway without turning on a light or waking anyone: the whole unit glows yellow when the temperature is comfortable, and shifts to other colours as it moves out of range, with the exact figure on the LED if you want it.
Two products in one, and that is the value case
Bought separately, a decent room thermometer and a nightlight would cost roughly the same as this together, which is where the price is justified. The light is deliberately soft rather than bright, so it works as a background glow for night feeds without stimulating a baby awake.
Practical notes from the review base: it is mains powered rather than battery, so it needs a socket near the cot, and the glow is dim by design, which some parents love and a few find insufficient as a room light. It is a nightlight, not a lamp.
Is it worth it? Our verdict
For a first baby, yes: it removes the guesswork from a question new parents worry about a lot, in a form you can read half asleep, and 6,400 consistent reviews say it holds up. The dual function is what makes the price reasonable.
If you already own a nightlight you like, a plain digital room thermometer costs a few pounds and tells you the same number. Buy the GroEgg2 for the glance-and-know convenience, not because temperature cannot be measured more cheaply.
One thing no thermometer replaces: safer-sleep guidance covers bedding, position and clothing as well as temperature. The NHS and Lullaby Trust pages are the sources worth reading alongside it.
Key features, as the manufacturer lists them
Taken from the product listing via Amazon's product API. These are the seller's claims, not our test results.
- Changes colour: Four different colours that change according to the room temperature and coordinate with our sleepwear togs. Blue for 16°C and below, yellow for 16-20°C, orange for 20-24°C, and red for over 24°C
- LED display: This smart baby sleep aid clearly shows the room temperature for reassurance at a glance
- Adjustable brightness: Three brightness levels. Turn the nightlight up for mid-night nappy changes, or down to create a calm sleep environment
- Minimal design: Baby night light with a soft silicone shell that’s smooth to touch
- USB powered: 200cm mains-power USB cable
Frequently asked questions
What temperature should a baby's room be?
UK safer-sleep guidance generally cites around 16 to 20C as a comfortable range, because overheating is a recognised SIDS risk factor. The GroEgg2 shows this by colour so you can check from the doorway, with the exact figure on its display.
What do the GroEgg2 colours mean?
The unit glows in four colours matched to temperature bands, with a comfortable range shown in one colour and warmer or cooler conditions in others. The LED shows the precise temperature alongside, so you get both a glance reading and a number.
Is the GroEgg2 bright enough to use as a nightlight?
It is deliberately soft, designed as a background glow for night feeds rather than a room light. Most parents consider that the point; if you want enough light to read by, it will not be sufficient.
Does it need batteries?
No, it is mains powered, so you need a socket within reach of where you want to place it. That is worth checking against your nursery layout before buying.
Is a room thermometer necessary?
Not strictly, but it removes guesswork on something safer-sleep guidance highlights, which is why so many parents use one. A basic digital thermometer costs a few pounds; the GroEgg2 costs more because it is also a nightlight.
Check price on Amazon →
