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

Govee Hygrometer Thermometer 3 Pack H5100, Mini Bluetooth Humidity Sensor

Product ID: 625386773

Details

Battery Description
Alkaline
Brand
Govee
Colour
White
Item Weight
0.04 Kilograms
Product Dimensions
24W x 56H

📊2-year data export & 20-day cloud storage

📶230ft Bluetooth + Wi-Fi range

🌡️±0.54°F accuracy, -4°F to 140°F range

A$111

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Description

🌡️ Stay ahead of the curve—monitor, protect, and optimize your space like a pro!

PRECISION SWISS SENSORS - Experience ultra-accurate readings with ±0.54°F and ±3%RH accuracy, ensuring your environment is always perfectly controlled.
COMPACT VERSATILE DESIGN - Miniature size fits discreetly in tight spaces—from potted plants to cigar humidors—without sacrificing style or function.
SEAMLESS REMOTE MONITORING - Connects effortlessly via Bluetooth or Wi-Fi for real-time temp & humidity updates anywhere in your home or garden.
ROBUST DATA TRACKING EXPORT - Access 20 days of cloud-stored data and export up to 2 years of historical records for deep insights and trend analysis.
SMART ALERTS FOR PEACE OF MIND - Set custom temperature and humidity thresholds and get instant notifications on your phone to prevent costly spoilage or discomfort.

The Govee Hygrometer Thermometer 3 Pack H5100 combines Swiss precision sensors with Bluetooth and Wi-Fi connectivity, delivering highly accurate temperature and humidity monitoring. Its compact design fits anywhere, while smart alerts and extensive data storage empower proactive home and specialty environment management. Ideal for everything from baby milk safety to cigar humidors, this 3-pack is a must-have for millennial professionals who demand control, convenience, and peace of mind.

Specifications

ASIN	B09DPCW47P
Battery Description	Alkaline
Best Sellers Rank	#218,189 in Garden & Outdoors ( See Top 100 in Garden & Outdoors ) #308 in Indoor Thermometers
Brand Name	Govee
Colour	White
Country of Origin	USA
Customer Reviews	4.4 4.4 out of 5 stars (1,263)
EU Spare Part Availability Duration	2 Years
Item Dimensions W x H	24W x 56H Millimeters
Item Highlight	Temperature sensor with APP notification alert, export 2-yr data, 230 feet connecting range for home/greenhouse
Item Weight	0.04 Kilograms
Manufacturer	Govee
Model Number	H5100
Mounting Type	Tabletop
Number of Items	3
Number of Packs	3
Operating Humidity	0%-99%RH
Part Number	B5100001
Temperature Accuracy	±0.54 Degrees Fahrenheit
Temperature Reading Accuracy	plus_minus_0_point_3_degrees_celsius
Upper Temperature Rating	140 Degrees Fahrenheit

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A$111

Duties & taxes included

In stock

Sold byAmazon AustraliaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Australia.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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