---
product_id: 20179075
title: "AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use"
brand: "the instrument store"
price: "FREE"
currency: DKK
in_stock: false
url: https://www.desertcart.dk/products/20179075-ar820-formaldehyde-gas-monitor-detector-formaldemeter-temperature-humidity-moisture-meter
store_origin: DK
region: Denmark
---

# AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use

**Brand:** the instrument store
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use by the instrument store
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/20179075-ar820-formaldehyde-gas-monitor-detector-formaldemeter-temperature-humidity-moisture-meter)

## Best For

- the instrument store enthusiasts

## Why This Product

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

## Description

Is a brand new and High Quality home use formaldehyde monitor that utilizes newly imported electrochemistry sensor technology and high precision operational amplifier. The product is capable of continuously converting the signal representing formaldehyde concentration into an electrical signal, which will be displayed by LCD after being processed by the built-in micro-processor. It protects you and your family from the harm of formaldehyde and guarantees your health by providing 24 hours of on-going real-time monitor of in-door formaldehyde concentration. An ideal tool to monitor the formaldehyde concentration at home, in office, inside a car or during interior decoration.   Features:  LCD Backlight: green  Transducer: Electrochemical sensor  Working Temperature Range: -10℃~40℃ / 32 ℉~104 ℉  Working Humidity Range: 10~90%RH  Detection of gas：Formaldehyde Gas(CH²O)  Measuring range：0~5PPM  The principle of sensor：Electrochemical principle, life for more than three year  Resolution ： 0.01PPM  Accuracy ：<±5% (F.S)  Response time ：<30 sec  Recovery time ：<50 sec±1%  To alarm：Acoustic,optical double alarm,can set thealarm value,an alarm sound is divided into 80dB  Operating temperature：-10~40℃  Temperature measuring ： √  Power: 3 * 1.5V AA Battery(not included) USB power supply

## Images

![AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use - Image 1](https://m.media-amazon.com/images/I/814ym2qFVsL.jpg)
![AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use - Image 2](https://m.media-amazon.com/images/I/81LbOYFrBzL.jpg)
![AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use - Image 3](https://m.media-amazon.com/images/I/81NoOMIARAL.jpg)
![AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use - Image 4](https://m.media-amazon.com/images/I/81jEEgjDcYL.jpg)
![AR820 Formaldehyde Gas Monitor Detector Formaldemeter Temperature Humidity Moisture Meter with Alarm for Home Use - Image 5](https://m.media-amazon.com/images/I/91oiKjQ8q0L.jpg)

---

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**Shop now:** [https://www.desertcart.dk/products/20179075-ar820-formaldehyde-gas-monitor-detector-formaldemeter-temperature-humidity-moisture-meter](https://www.desertcart.dk/products/20179075-ar820-formaldehyde-gas-monitor-detector-formaldemeter-temperature-humidity-moisture-meter)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-20*