Can the metrics be changed, for example Fahrenheit to Celcius?

Yes, there is a dedicated switch to change between Fahrenheit and Celcius.

Is there a warranty? Mine broke after 5 months

Hello, the Warranty shall apply to Aranet 24 months after it is shipped to the customer. Please use the Returns Support Centre to claim for a repair or replacement.

This says it has a battery life of ~4 years but I can't see anywhere that says how many hours it lasts between recharging. Can anyone advise, please?

I think that literally means the batteries will last 4 years. It's an e-ink display like a kindle so it should only consume energy when updating the display and the electronics must be minimal energy. The exception might be if you use the bluetooth connectivity frequently, I guess. I've had it running constantly on the 2 AA batteries it came with for ~4 months without a problem so far.

Can a single app show the data from multiple devices?

There are 2 Android apps available, Aranet4 and Aranet4 Display. Either app allows you to scan for additional sensors. I don't have multiple sensors to test this but from the app screens, I think the former allows you to show multiple sensor readings on the same screen (small for personal viewing) whereas the latter shows the selected sensor in big characters (for public viewing from a distance as a possible use scenario).

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Aranet4 Home Wireless Indoor Air Quality Sensor for Home, Office or School [CO2, Temperature, Humidity and More] Portable

Aranet4 Home Wireless Indoor Air Quality Sensor for Home, Office or School [CO2, Temperature, Humidity and More] Portable

Product ID: 359295406

Details

Colour
white
Brand
SAF
Product dimensions
7W x 2.4H
Item weight
104 Grams
Battery description
Alkaline

📶Wireless Connectivity

🔋Long-lasting Battery Life

🌡️Real-time Temp Monitoring

S$429

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Description

🌬️ Elevate your air IQ — because fresh air is the new luxury.

PRECISION YOU CAN TRUST - NDIR sensor technology delivers the most accurate CO2 readings on the market.
BREATHE SMARTER LIVE BETTER - Instant CO2, humidity & air pressure insights keep your environment optimized.
TRACK TRENDS WITH 90 DAY HISTORY - Smartphone app lets you analyze air quality patterns and make informed decisions.
E INK DISPLAY FOR ULTRA EFFICIENCY - Low power consumption means your sensor stays active longer without frequent battery changes.
COLOR CODED ALERTS FOR PEACE OF MIND - Visual and buzzer warnings ensure you never miss unhealthy air spikes.

The Aranet4 Home is a portable, wireless indoor air quality sensor designed for homes, offices, and schools. It monitors CO2, temperature, humidity, and air pressure in real time using advanced NDIR sensor technology. Featuring a power-efficient E-Ink display and color-coded alerts with an optional buzzer, it ensures you stay informed about your environment’s health. The companion smartphone app provides up to 90 days of historical data for trend analysis, all powered by long-lasting AA batteries.

Specifications

ASIN	B07YY7BH2W
Batteries	2 AA batteries required. (included)
Best Sellers Rank	6,049 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 7 in Airflow & Air Quality
Customer Reviews	4.6 4.6 out of 5 stars (1,812)
Date First Available	18 July 2019
Guaranteed software updates until	unknown
Item model number	TDSPC003.001
Language	English, Spanish
Manufacturer	SAF Tehnika
Part number	TDSPC0H3.002
Power source type	Battery Powered
Product Dimensions	7.01 x 7.01 x 2.39 cm; 104 g

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S$429

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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TrustScore 4.5 | 7,300+ reviews

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