U UNNI Wireless Weather Station with Atomic Clock

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Product guide

U UNNI Wireless Weather Station with Atomic Clock

The U UNNI wireless weather station combines indoor and outdoor temperature and humidity readings with an atomic clock and a continuously powered display. Its weather information includes forecasts, dew point, heat index, barometric pressure, comfort, tide level, and moon phase, while the adjustable brightness and included power adapter support a readable fixed-location setup.

At a glance

Shows indoor and outdoor temperature and humidity alongside forecast, dew point, heat index, barometric pressure, comfort, tide level, and moon phase.
The 7.5-inch always-on display has adjustable brightness when powered by the adapter.
A wireless sensor is described as transmitting readings up to 330 ft and updating every 30 seconds.
The atomic clock is designed to receive WWVB time and adjust for daylight saving time.

Price

$35.99Save 10%

Reference price: ~~$39.99~~

Price checked: Nov 13, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

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Pros and cons

Pros

A single display brings together weather readings, clock information, and several supplementary indicators.
Adjustable display brightness and large-font readability are practical for quick checks across a room.
The listed sensor transmission range can help place the outdoor sensor apart from the display, within the stated range.

Cons

Keeping the backlight on requires the adapter, so the display is not described as a continuously lit battery-powered unit.
The tide indicator provides a level rather than daily tide times.

Technical specifications

14 specifications

Identity
Brand	U UNNI

Display
Screen technology listed	lcd led
Display size	7.5-inch

Readings and sensors
Sensor technology	Thermistor, Capacitive/Resistive, Barometric
Temperature accuracy listed	1 °C
Upper temperature range	50 °C
Temperature and humidity update interval	every 30 seconds
Wireless transmission range	up to 330 ft radius

Connectivity and controls
Wireless connection listed	Radio Freqeuncy
Display brightness	Adjustable Brightness
Clock synchronization	WWVB

Power
Power configuration	Corded Electric

Materials and weight
Weight listed	0.6 kg
Material listed	Acrylonitrile Butadiene Styrene (ABS), Glass, Plastic

What to know before buying

Listing details to confirm

The adapter powers the continuously lit backlight. Batteries are for data backup, are not included, and provide only about 10 seconds of lighting. Setup instructions describe an initial 10-minute period without updated temperature and humidity readings, and atomic synchronization may take 2–5 days. The listing also says the advertised tide indicator does not give daily tide times. Temperature accuracy is listed as 1 °C, while customer feedback reports mixed experience with outdoor temperature readings.

What’s in the box

7.5-inch display screenCheck selected pack
Wireless sensorCheck selected pack
Power adapterIncluded

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Households wanting a large, adjustable-brightness display for indoor and outdoor temperature and humidity.
Buyers who want a weather station that also displays atomic time, barometric pressure, moon phase, and a tide-level indicator.
Fixed indoor locations with access to an outlet for continuous backlighting.

Less suited to

Buyers who need daily tide times, rather than a tide-level indicator.
Those who need continuous backlighting while running the display on batteries alone.
Anyone requiring outdoor temperature accuracy that is guaranteed beyond the listing claim and mixed feedback.

U UNNI Wireless Weather Station with Atomic Clock · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,158 ratings

5 stars73%73%
4 stars14%14%
3 stars6%6%
2 stars3%3%
1 star4%4%

Customer feedback describes the station as easy to set up, readable, and useful for its range of displayed information, with positive comments about adjustable brightness and perceived accuracy. Temperature accuracy is mixed, including reports of outdoor-reading issues. That matters if you rely on the sensor for precise outdoor monitoring. The listing’s stated accuracy is a manufacturer claim, not a resolution of those differing experiences.

Positive themes

Customers describe setup as easy and the display as readable in both daytime and nighttime conditions.
Customers appreciate the adjustable brightness and the range of information, including moon phase, barometric pressure, and tide information.
Some customers report that readings seem accurate, including comparisons with TV weather forecasts.

Mixed feedback

Customer feedback is mixed on temperature accuracy, with some reports questioning outdoor readings.

Frequently asked questions

Can the display stay lit without the power adapter?

No. The listing says the adapter is needed to keep the backlight on and adjust its brightness. Batteries are for data backup, and battery lighting lasts about 10 seconds.

Does the tide indicator show daily tide times?

No. The listing describes a tide-level indicator that updates with the date, but says it does not provide daily tide times.

How quickly does the atomic clock synchronize?

The listing says synchronization can take 2–5 days. It also says the time and date can be set manually if synchronization takes longer than five days.

What is included?

The manufacturer’s package information lists a 7.5-inch display screen, one wireless sensor, and a power adapter. Batteries are not included.