Can this connect with smart humidifier on its own or does it need the wifi gateway?

It can be used as a stand-alone Bluetooth humidity sensor. And it can be connected to the Govee humidifier.

why they stopped working one by one

The single AAA battery typically only last 4 months per the manual. Mine barely made it to 3 months and the battery level displayed in the app was not accurate.

Do we need to purcahse the cloud service?

I've been using mine for over a month just about 24/7 in a grow tent. At the moment im not using any app (alexa). Im just plug n use. So long story short i would say no cloud necessary...lol

What is the battery life? i installed 3 of these end of november and 2 of the 3 died end of december. not great for remote rental property.

The temperature sensor's battery life is about 4 months. Low temperature will shorten the battery life. We promise a 12-month warranty. Need any help, feel free to contact us via Amazon message center.

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Govee Hygrometer Thermometer 3 Pack H5100, Mini Bluetooth Humidity Sensor | Temperature sensor with APP notification alert, export 2-yr data, 230 feet connecting range for home/greenhouse

Product ID: 379423017

Details

Battery Description
Alkaline
Brand
Govee
Color
White
Item Weight
0.04 Kilograms
Product Dimensions
0.95"W x

📊2 years free data export

📶230ft Bluetooth range

🌡️±0.54°F temperature accuracy

KSh12137

Duties & taxes included

In stock

Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌡️ Stay ahead of the climate curve—monitor smarter, live better!

PRECISION SWISS SENSORS - Experience ultra-accurate readings from -4℉ to 140℉ with ±0.54℉ accuracy and 0%-99% humidity detection at ±3% precision.
COMPACT DISCREET DESIGN - Miniature size fits perfectly in tight spaces like potted plants or reptile tanks—monitor without intrusion.
SMART ALERTS ON YOUR PHONE - Set custom temperature and humidity thresholds and get instant notifications via the Govee app—protect your environment proactively.
ROBUST DATA STORAGE EXPORT - Access 20 days of cloud-stored data and export up to 2 years of historical records for trend analysis and peace of mind.
SEAMLESS LONG RANGE MONITORING - Stay connected up to 230 feet with Bluetooth, or link to the H5151 Wi-Fi Hub for unlimited range—never miss a beat indoors or outdoors.

The Govee Hygrometer Thermometer 3Pack H5100 is a compact, Bluetooth-enabled sensor set with Swiss-made precision, offering ±0.54°F temperature accuracy and 0%-99% humidity detection. It supports up to 230 feet Bluetooth range or unlimited range via the H5151 Wi-Fi Hub. Featuring smart app alerts, 20-day cloud data storage, and 2-year export capability, it’s designed for seamless, professional-grade environmental monitoring in any small space.

Specifications

ASIN	B09DPCW47P
Battery Description	Alkaline
Best Sellers Rank	#7,553 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #27 in Indoor Thermometers
Brand Name	Govee
Color	White
Customer Reviews	4.4 4.4 out of 5 stars (1,006)
EU Spare Part Availability Duration	2 Years
Item Dimensions W x H	0.95"W x 2.21"H
Item Weight	0.04 Kilograms
Manufacturer	Govee
Model	H5100
Mounting Type	Tabletop
Operating Humidity	0%-99%RH
Part Number	B5100001
Smart Home Compatibility	Smart Home Compatible
Temperature Accuracy	±0.54 Degrees Fahrenheit
Temperature Reading Accuracy	plus_minus_0_point_3_degrees_celsius
Upper Temperature Range	140 Degrees Fahrenheit

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