Gresonic 100 LED Warm White Fairy Lights, 20 m, 8 Modes

Gresonic 100 LED fairy lights are a 20 m mains-powered string with warm white lighting, eight modes and a plug-button timer. Their listed IP44 protection is accompanied by a warning that the adapter is not waterproof, so outdoor placement needs a covered waterproof receptacle.

At a glance

Eight selectable lighting modes, including steady-on and several flashing or fading patterns.
Plug-button timer is described as a daily 6-hour on, 18-hour off cycle.
The listing describes 10 m of lights plus a 10 m power cord, for 20 m total.
The manufacturer specifies IP44, but says the adapter is not waterproof.

Price

£10.99Save 15%

Reference price: ~~£12.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Eight modes and a timer provide options for changing the display and scheduling daily operation.
The stated 10 m light section and 10 m lead offer flexibility when positioning the string near a socket.
Mains power avoids relying on replaceable batteries.

Technical specifications

18 specifications

Identity
Brand	Gresonic
Model	DHLO/CZSABE-XL
Light count	100
Colour description	8 Modes Warm White
Light colour	White
Colour temperature	3000 Kelvin

Lighting and controls
Control methods listed	Touch

Power and connectivity
Power configuration	Corded Electric
Voltage	230 Volts
Wattage	5 watts
Connection listed	USB

Dimensions and installation
Total length	20 Metres
Light-string length	10m
Weight listed	0.3 Kilograms

Materials and protection
Water resistance listed	Waterproof
Ingress protection rating	IP44
Material listed	Plastic
Indoor/outdoor use	Indoor, Outdoor

What to know before buying

Listing details to confirm

The listing is inconsistent about the connection, describing corded electric power while also listing USB. It gives a 20 m total length and separately states 10 m of lights plus a 10 m power cord. Warm white is also paired with a generic White light-colour field. The outdoor-use claim and Waterproof wording are qualified by the explicit warning that the adapter is not waterproof. Confirm the selected variant and connection details before purchase. Use a waterproof receptacle cover outdoors, as the listing advises.

What’s in the box

Included

Plug

Who is it for?

A good fit for

Decorating bedrooms, living spaces, gardens or party settings where a mains socket is available.
Buyers wanting multiple lighting patterns and an automatic daily timer.

Less suited to

Locations without convenient mains access.
Outdoor installations where the adapter cannot be kept under a waterproof receptacle cover.

Gresonic 100 LED Warm White Fairy Lights, 20 m, 8 Modes · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 224 ratings

5 stars74%74%
4 stars12%12%
3 stars6%6%
2 stars4%4%
1 star4%4%

Customer feedback highlights brightness, appearance and outdoor use as positives, while reliability is a concern, with reports of lights stopping after about a year and a half or being completely dead. That matters for seasonal or long-term installations, even though the listing describes a timer and outdoor use. The overall rating distribution is mostly five-star but includes lower ratings, so it does not remove the reported reliability concern.