---
product_id: 359295406
title: "Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration"
brand: "saf"
price: "178004 Ft"
currency: HUF
in_stock: true
reviews_count: 13
category: "Saf"
url: https://www.desertcart.hu/products/359295406-aranet4-home-smart-indoor-air-quality-monitor-co2-temperature-humidity
store_origin: HU
region: Hungary
---

# Real-time BLE Updates 4-Year Battery Life Temp & Humidity Precision Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration

**Brand:** saf
**Price:** 178004 Ft
**Availability:** ✅ In Stock

## Summary

> 🌬️ Stay ahead of stale air—because your productivity deserves fresh vibes!

## Quick Answers

- **What is this?** 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?** 178004 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/359295406-aranet4-home-smart-indoor-air-quality-monitor-co2-temperature-humidity)

## 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

- • **Data-Driven Wellness:** Track 90 days of historical air quality trends via a sleek smartphone app—no accounts needed.
- • **Trusted EU Engineering:** Accurate NDIR sensor tech and encrypted data transmission for reliable, secure readings.
- • **Breathe Smarter, Live Better:** Instant CO2, temp & humidity insights keep your indoor air fresh and your mind sharp.
- • **Portable Air Quality Guardian:** Compact, lightweight design lets you monitor anywhere—from your home office to bedroom.
- • **Energy-Efficient E-Ink Display:** Crystal-clear, low-power screen ensures up to 4 years of uninterrupted monitoring.

## 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 and Bluetooth connectivity, it offers real-time updates and up to 4 years of battery life. The free app provides 90 days of historical data analysis without requiring user accounts, making it an essential tool for health-conscious professionals seeking smarter indoor environments.

## 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: Great product - Let's me see how much I need to open my window!

## 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 |
| Batteries | 2 AA batteries required. (included) |
| Best Sellers Rank | 6,899 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 12 in Airflow & Air Quality |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,727) |
| Date First Available | 18 July 2019 |
| 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 |

## Product Details

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

## Images

![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.

### ⭐⭐⭐⭐⭐ Great product
*by K***R on 20 January 2026*

Let's me see how much I need to open my window!

### ⭐⭐⭐⭐⭐ Buy it - it’s really worth it
*by A***R on 3 January 2025*

At the beginning I was quite sceptical about this mechanism but as one of our friends highly recommended to have one in our house so we decided to buy it. Very happy with my purchase. It shows the CO2 level, humidity and the room temperature. I started to sleep with open window as the CO2 level was quite high after a night. My quality of sleep improved, I feel more rested. No doubt that it’s very useful. Another interesting fact that we went to one of the castles in Scotland and we spotted the same mechanism in one of the rooms. Probably it proves that it can be trusted.

## 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

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-09*