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Ecowitt WS3900 Weather Station vs Ecowitt WS2910 Weather Station

Both kits ship the same WS69 7-in-1 outdoor array, so outdoor accuracy, sensor range and reporting interval are effectively identical. The real choice is the console: the WS3900 gives you a larger 7.5-inch VA-LCD with big indoor readings, while the WS2910 gives you a 6.8-inch color screen with a fuller on-screen dashboard. Buyers of the WS2910 praise the easy-to-read color display; the WS3900 is the pick if you want the biggest numbers across the room.

  • Choose the Ecowitt WS3900 if you want the largest, simplest-to-read indoor display and care more about big temperature and humidity numbers than a color screen.
  • Choose the WS2910 if you want a color console that shows wind, rain, UV and moon phase at a glance on one screen.

Prices

  • Ecowitt WS3900 Weather Station: $159.99 at Walmart (last seen Nov 10)
  • Ecowitt WS2910 Weather Station: $136.80 at Walmart (last seen Nov 10)
  • Difference: the Ecowitt WS2910 Weather Station is $23.19 cheaper than the Ecowitt WS3900 Weather Station at the latest prices (Nov 10)
Ecowitt
Ecowitt WS3900 Wi-Fi Weather Station Kit Indoor Outdoor, Includes Indoor 7.5'' LCD Large Display Console and WS69 Outdoor Sensor Array,915 MHz

Ecowitt WS3900 Weather Station

Ecowitt WS3900 Wi-Fi Weather Station Kit Indoor Outdoor, Includes Indoor 7.5'' LCD Large Display Console and WS69 Outdoor Sensor Array,915 MHz

4.4(5 ratings)
$159.99at WalmartChecked Nov 10
See all prices and details
Visit Walmart
Pros
  • Large 7.5-inch screen readable across a room
  • Simple layout with big indoor temperature and humidity
  • Physical buttons are easy to use without menus
  • Same proven WS69 outdoor array as the WS2910
  • Runs on DC power with AA battery backup
Cons
  • Monochrome-style display shows less data at once
  • Fewer configurable alarms than the WS2910
  • No color coding for wind or rain
W
WS2910 Professional Digital Wi-Fi Weather Station 6.8" Color Display with Solar Powered 7-in-1 Outdoor Sensor Array

Ecowitt WS2910 Weather Station

WS2910 Professional Digital Wi-Fi Weather Station 6.8" Color Display with Solar Powered 7-in-1 Outdoor Sensor Array

5(18 ratings)
$136.80at WalmartChecked Nov 10
See all prices and details
Visit Walmart
Pros
  • Color 6.8-inch display packs wind, rain, UV and moon phase on one screen
  • Wide set of high/low alarms including gust and heat index
  • Uploads to Weather Underground, Weather Cloud and WOW
  • Solar-powered sensor array with 100 m range
  • Well rated by owners for readability
Cons
  • Smaller screen than the WS3900
  • Color screen can be busier to read from a distance
  • Outdoor array needs backup batteries not included

What separates them

Ecowitt WS3900 Weather StationEcowitt WS2910 Weather Station
Console display7.5-inch VA-LCD, monochrome-style segment layout6.8-inch color LCD
Outdoor sensorWS69 7-in-1 array (temp, humidity, wind, rain, UV, solar)Same WS69 7-in-1 array
Sensor reporting intervalStandard Ecowitt interval16 seconds
Wireless range915 MHz, typical Ecowitt backyard rangeUp to 100 m (330 ft)
Console powerDC powered plus 3 x AA batteries5V DC adapter plus battery backup
On-screen dataIndoor temp, humidity, pressure, forecast, clockWind, rain, UV, solar, dew point, moon phase, heat index
AlertsBasic forecast and alarm clockHigh/low alarms for temp, humidity, pressure, wind, gust, rain, dew point, heat index
Online uploadsWi-Fi to Ecowitt.net and weather networksWi-Fi to Weather Underground, Weather Cloud, WOW and Ecowitt.net

Price history

  • Ecowitt WS2910 Weather Station: lowest $123.99 on Nov 10 at ecowittweather.

Prices at every store

Ecowitt WS3900 Weather Station

  • WalmartNew

    In stockSold by FINE OFFSETReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $159.99Free shippingChecked Nov 10
    Visit Walmart
Prices and history →

Ecowitt WS2910 Weather Station

  • EcowittNew

    In stockShips from Hong Kong SAR China · duties may applyReturn policy

    $123.99Checked Nov 10
    Visit Ecowitt
  • WalmartNew

    In stockSold by FINE OFFSET

    $136.80Free shippingChecked Nov 10
    Visit Walmart
  • Weather SparesNew

    In stockShips from the UK · duties may apply

    $200.00Checked Nov 10
    Visit Weather Spares

Also available at

  • ecowittweatherCheck price at ecowittweather
All 3 stores and price history →

Specs compared

SpecEcowitt WS3900 Weather StationEcowitt WS2910 Weather Station
Power sourceDC powered and 3 x AA Alkaline / Lithium batter…Solar Powered, 5V DC Adapter (included)
Display size7.5" LCD—
Console dimensions209×28.5×142.5(mm)—
Screen size169×94.5(mm)—
Console weight366(g)—
Screen materialVA-LCD—
Casing materialABS—
Temperature range-9.9°C to 60°C(14°F to 140°F)—
Physical buttons8 physical buttons—
Wireless frequency915 MHz—
Wi-Fi band2.4 GHz Wi-Fi—
Outdoor sensor transmission distance—100 m (330 ft.)
Show all 38 specsShow fewer specs
SpecEcowitt WS3900 Weather StationEcowitt WS2910 Weather Station
Outdoor temperature range—-40°F - 140°F
Outdoor humidity range—1% ~ 99%
Wind speed range—0-50m/s
With Humidity Sensor—Yes
Type—Weather Station
Scale—mm (rainfall), hPa (pressure), inHg (pressure),…
Temperature—Yes
Temperature Scale—F, C
Barometric Pressure—Yes
Humidity

What reviewers say

Ecowitt WS2910 Weather Station

  • 5 / 518 ratings

Owners give the WS2910 top marks, calling the color display easy to read and the station a reliable aid for planning outdoor trips. Setup is generally described as straightforward, and the sensor array holds up well in backyard use.

What people mention
  • DisplayPraisedOwners call the 6.8-inch color screen easy to read and a highlight of the station.
  • SetupPraisedBuyers describe pairing the console and sensor array as quick and simple.
  • AccuracyMixedReadings are generally trusted, though sun exposure can push the outdoor temperature high.
  • BatteriesCriticisedThe outdoor sensor array needs backup batteries that are not included in the box.

Questions and answers

Which is better for reading across a room?
The WS3900. Its 7.5-inch screen is larger and its big indoor temperature and humidity numbers are easier to read from a distance than the 6.8-inch color console.
Do they measure the same things outdoors?
Yes. Both include the same WS69 7-in-1 array, so outdoor temperature, humidity, wind, rain, UV and solar radiation are identical in capability.
Which has better alerts?
The WS2910. It sets high/low alarms for temperature, humidity, pressure, wind, gust, rain rate, dew point and heat index; the WS3900 is more basic.
Is the WS2910 worth stepping up to?
If you want a color dashboard and detailed alarms, yes. If you mainly want a big, simple indoor readout, the WS3900 covers it with the same outdoor sensor.
Which lasts longer outdoors?
Outdoor hardware is the same array on both, so durability is equal. The WS2910's solar panel helps keep its sensor batteries topped up.
Can both upload to weather networks?
Yes. Both are Wi-Fi stations that publish to Ecowitt.net; the WS2910 also lists Weather Underground, Weather Cloud and WOW.

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Buying guides that pick them

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—
Yes
Wind Direction—Yes
Wind Speed—Yes
Accuracy—5% (Humidity)
Forecast—Yes
Rainfall—Yes
Sensing Method—Self emptying tipping spoon assembly (for rainf…
UV Index—Yes
Update Interval—16 seconds (Sensor reporting interval)
Wireless Type—Wi-Fi, Wireless
Color—Color
Mounting—Outdoor
Backup Power—Batteries, Batteries (for console in case of po…
Logging—Yes (records data all the time with backup powe…
Display Type—LCD Screen, Digital
Display Highlights—Color Display
Typical Users—Professional