---
product_id: 359295406
title: "SAF Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration"
brand: "saf"
price: "3500 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Saf"
url: https://www.desertcart.dk/products/359295406-saf-aranet4-home-smart-indoor-air-quality-monitor-co2-temperature
store_origin: DK
region: Denmark
---

# 90 days historical data on app Up to 4 years battery life Accurate CO2 sensing via NDIR tech SAF Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration

**Brand:** saf
**Price:** 3500 kr
**Availability:** ✅ In Stock

## Summary

> 🌿 Stay ahead of stale air—because your brain deserves the freshest vibes.

## Quick Answers

- **What is this?** SAF Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration by saf
- **How much does it cost?** 3500 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/359295406-saf-aranet4-home-smart-indoor-air-quality-monitor-co2-temperature)

## Best For

- saf enthusiasts

## Why This Product

- Trusted saf brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power That Lasts:** Energy-efficient E-Ink screen and 2 AA batteries deliver up to 4 years of uninterrupted monitoring—set it and forget it.
- • **Data-Driven Wellness:** Seamlessly sync with the intuitive Aranet4 app to track 3 months of air quality trends and optimize your living or workspace.
- • **Breathe Smarter, Live Better:** Real-time CO2, temperature, humidity & pressure monitoring keeps your indoor air pristine and productivity high.
- • **Compact, Portable, Essential:** Lightweight and sleek design fits anywhere—take it from your home office to bedroom and never miss a breath of fresh air.
- • **Effortless Alerts, Zero Guesswork:** Color-coded E-Ink display and buzzer instantly warn you when air quality dips—no more second-guessing your environment.

## Overview

The SAF Aranet4 Home is a portable, battery-powered indoor air quality monitor that precisely tracks CO2 levels, temperature, humidity, and atmospheric pressure using advanced NDIR sensor technology. Featuring a low-energy E-Ink display with color-coded alerts and an optional buzzer, it ensures you’re instantly aware of air quality changes. With up to 4 years of battery life and seamless Bluetooth integration to the Aranet4 app, it offers 90 days of historical data for informed decisions about your indoor environment. Compact and easy to use, it’s the smart choice for health-conscious professionals seeking optimal air quality at home or work.

## Description

The Aranet4 HOME sensor is easy to use battery powered CO2 level monitoring device for indoor use. Meter additionally measures temperature, humidity and atmospheric pressure. It's equipped with two types of indicators to warn about the state of the air quality.Visual CO2 indicator represents the level of the CO2 concentration in the roomSound indicator alarms if the CO2 concentration becomes too highSmall form-factor makes Aranet4 very portable. Take it with you and be aware of the indoor air quality around you!CO2 Reading LevelsGreen represents a normal level (below 1000 ppm)Yellow represents an average level (1000 to 1400 ppm)Red represents high level (above 1400 ppm)*For more information visit our web page and download the user manualProduct Key FeaturesTracks CO2, temperature, relative humidity and the atmospheric pressureManufactured in the EUPrecise data measurements ensured by the use of the best quality componentsPower efficient gadget with up to 4 years long battery lifeUltra-portable form factor and very simple to useAranet4 app helps to follow historical air quality data and adjust device settingsUses the nondispersive infrared (NDIR) sensor to measure CO2Technical SpecificationMeasurements of CO2 (carbon dioxide), temperature, relative humidity, atmospheric pressureFor indoor use onlyMade from polycarbonatePowered by 2 AA Alkaline batteries (batteries included)Battery life up to 4 yearsData transmission after 1, 2, 5, 10 minutesData encryptionWeights 104g (3.7oz)Dimensions 70x70x24 mm/2.76x2.76x0.94 inchesOperating humidity 0% to 85% non-condensingOperating temperature 0C to 50C (32F to 122F)

Review: Its good - Was looking for a CO2 monitor for some time and this does the job nicely. Being portable means I can have it in my study while I work or move it to the bedroom while I sleep, readings correlate pretty well with when I'm feeling groggy from being in the same room too long without opening a window and it has helped me feel clearer headed. The eink display is pretty easy to read and should mean the battery doesnt drain too fast, It transmits its updates over BLE meaning homeassistant picked it up immediately without needing to be paired. App is straightforward and allows you to adjust a couple of settings as well as update the firmware. And it works locally so no accounts needed for the device or app.
Review: Excellent home CO2 monitor - I picked this up on somewhat of a whim, I read a number of online reviews and it was credited as a very good device but pricy. I have to say it's worth it though. The Bluetooth linking and data storing works really well, I can leave it in-situ for a day or two and then come back and pick up the data to show the trends. Battery life seems excellent (can't comment yet given it's designed to be months to a year) and the unit is ideal sized. I'll admit that it feels somewhat fragile, but then again do you really want to be slinging something like this around. No hesitation, glad I picked it up.

## Features

- The perfect companion for indoor use, allows you to monitor CO2 content, temperature, relative humidity and air pressure in real time
- Easy for everyone to use – the colour coding and the optional buzzer warns you when the CO2 concentration becomes too high
- The energy-efficient E-Ink display ensures a particularly long battery life of the radio
- Smartphone app for viewing and analyzing historical data up to 90 days history
- Uses non-dispersive infrared sensor technology (NDIR) for the most accurate and reliable CO2 readings

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07YY7BH2W |
| Battery Description | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | 12,095 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 18 in Airflow & Air Quality |
| Brand | SAF |
| Colour | white |
| Customer Reviews | 4.6 out of 5 stars 1,710 Reviews |
| Global Trade Identification Number | 04752213000037 |
| Item Dimensions W x H | 7W x 2.4H centimetres |
| Item Weight | 104 Grams |
| Item height | 2.39 centimetres |
| Item weight | 104 Grams |
| Manufacturer | SAF Tehnika |
| Mounting Type | Tabletop |
| Mounting type | Tabletop |
| Operating Humidity | 85 percent |
| Product dimensions | 7W x 2.4H centimetres |
| Temperature Accuracy | 1.2 degrees Celsius |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 50 Degrees Celsius |

## Product Details

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

## Images

![SAF Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration - Image 1](https://m.media-amazon.com/images/I/61EVDR3FJpL.jpg)

## Questions & Answers

**Q: Can the metrics be changed, for example Fahrenheit to Celcius?**
A: Yes, there is a dedicated switch to change between Fahrenheit and Celcius.

**Q: Is there a warranty? Mine broke after 5 months**
A: 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.

**Q: 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?**
A: 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.

**Q: Can a single app show the data from multiple devices?**
A: 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).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Its good
*by J***N on 29 August 2024*

Was looking for a CO2 monitor for some time and this does the job nicely. Being portable means I can have it in my study while I work or move it to the bedroom while I sleep, readings correlate pretty well with when I'm feeling groggy from being in the same room too long without opening a window and it has helped me feel clearer headed. The eink display is pretty easy to read and should mean the battery doesnt drain too fast, It transmits its updates over BLE meaning homeassistant picked it up immediately without needing to be paired. App is straightforward and allows you to adjust a couple of settings as well as update the firmware. And it works locally so no accounts needed for the device or app.

### ⭐⭐⭐⭐⭐ Excellent home CO2 monitor
*by A***C on 24 September 2023*

I picked this up on somewhat of a whim, I read a number of online reviews and it was credited as a very good device but pricy. I have to say it's worth it though. The Bluetooth linking and data storing works really well, I can leave it in-situ for a day or two and then come back and pick up the data to show the trends. Battery life seems excellent (can't comment yet given it's designed to be months to a year) and the unit is ideal sized. I'll admit that it feels somewhat fragile, but then again do you really want to be slinging something like this around. No hesitation, glad I picked it up.

### ⭐⭐⭐⭐⭐ You get what you pay for
*by E***N on 20 October 2023*

I've never seen an app for a connected device that's this good. - The app reliably takes only 3 seconds to sync sensor data with the device. Zero connection issues, no faffing about with toggling Bluetooth on/off, it just works, every time. - Easy to use and graphs for CO2, temperature, humidity, and atmospheric pressure. - Everything about the app interface is polished. Setup, firmware updates, regular usage, power-user features, you name it. - The sensor data can be trivially exported in a plain text format. Cons: - To update, the e-ink display needs to flash the entire screen black for a second, it's distracting if the device is within your field of view. - The display does not have any backlight, so to view it in a dark environment you need to either shine light at it or use the phone app.

## Frequently Bought Together

- SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History
- SAF Aranet Radon Detector for Home: 10-Min Measurement, Temperature, Relative Humidity, Pressure, E-Ink Display, 7-Year Battery, Portable with Free App, Bq/m3 & pCi/L Selectable

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/359295406-saf-aranet4-home-smart-indoor-air-quality-monitor-co2-temperature](https://www.desertcart.dk/products/359295406-saf-aranet4-home-smart-indoor-air-quality-monitor-co2-temperature)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-25*