---
product_id: 10335594
title: "Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator"
brand: "santacary"
price: "฿137"
currency: THB
in_stock: false
reviews_count: 7
url: https://www.desertcart.co.th/products/10335594-pocket-hcho-monitor-detector-for-home-use-formaldehyde-oxymethylene-temperature
store_origin: TH
region: Thailand
---

# 0.01 ppm ultra-fine formaldehyde resolution 14+ days continuous battery life Multi-sensor: formaldehyde, temp & humidity Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator

**Brand:** santacary
**Price:** ฿137
**Availability:** ❌ Out of Stock

## Summary

> 🌬️ Breathe Smart, Live Better — Your Pocket Guardian Against Invisible Hazards

## Quick Answers

- **What is this?** Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator by santacary
- **How much does it cost?** ฿137 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/10335594-pocket-hcho-monitor-detector-for-home-use-formaldehyde-oxymethylene-temperature)

## Best For

- santacary enthusiasts

## Why This Product

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

## Key Features

- • **Pocket-Sized Powerhouse:** World’s smallest and lightest formaldehyde monitor—discreetly fits in your hand or pocket for on-the-go peace of mind.
- • **Triple Threat Sensor Suite:** Simultaneously measures formaldehyde, ambient temperature, and relative humidity, giving you a comprehensive snapshot of your environment.
- • **Pinpoint Precision Air Safety:** Detects formaldehyde levels from 0 to 5 ppm with an industry-leading 0.01 ppm resolution for crystal-clear indoor air insights.
- • **Two-Week Continuous Monitoring:** Stay ahead of indoor pollutants with over 14 days of uninterrupted tracking, complete with trend curves to visualize air quality shifts.
- • **Instant Alerts with Color-Coded Safety:** Green, yellow, and red indicators provide immediate visual cues on air quality, empowering you to act fast and protect your space.

## Overview

The Fairyland FH20 is a cutting-edge, pocket-sized formaldehyde monitor designed for precise indoor air quality tracking. It measures formaldehyde concentrations from 0 to 5 ppm with an exceptional 0.01 ppm resolution, alongside ambient temperature and humidity. With over 14 days of continuous battery life and real-time trend displays, it empowers professionals and homeowners alike to maintain a safe, healthy environment effortlessly.

## Description

HCHO Specification Measurement Range: 0~5.0ppm (0~6.25mg/m3) Resolution: 0.01ppm Response Time: <30 seconds Green: <0.08 mg/m3 or <0.06ppm; Yellow: 0.08~0.3 mg/m3 or 0.06~0.24ppm; Red: >0.3 mg/m3 or >0.24ppm Temperature Specification Display Resolution: 0.1°C (0.1°F) Response Time: 5~30 seconds RH Specification Display Resolution: 1%RH Response time: <8 seconds for 63% of step change

## Features

- Fairyland FH20 is a mini style, precise indoor air quality monitor suitable for monitoring low level concentrations of hazardous formaldehyde vapors in both ppm (parts per million) and mg/m3. Up to now, FH20 should be the smallest formaldehyde monitor in the world. It cans measure formaldehyde concentration in a range of 0-5ppm and a resolution of 0.01 ppm. With fully charged, FH20 is capable of over 14 days continuous monitoring formaldehyde concentration showing in trend curve and help people to understand the changing of Indoor Air Quality. In addition to measuring the formaldehyde concentration, the Fairyland FH20 can also measure the ambient temperature and the relative humidity. With its accurate, small size and lightweight, Fairyland FH20 can be widely used in the new office, new home, super market, gardening, furniture, wooden floor, indoor decoration, medical, food, wall papers, construction materials construction, paper manufacture, industrial safety, labor-working place, etc. for indoor formaldehyde gas detection, test and verify the efficiency of the air purifier and formaldehyde removing detersive.
- FH20 detects low level concentrations of hazardous formaldehyde vapors with a resolution of 0.01 ppm
- Electrochemical sensor for formaldehyde detection
- Trend display available for easy understanding about formaldehyde change in up to 8 days
- FH20 should be the smallest and the lightest formaldehyde monitor in the world
- FH20 can also measure the ambient temperature and the relative humidity; Selectable °C and °F.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Santacary Technology Co., Ltd. |
| Part Number | FH20 |
| Item Weight | 2.7 ounces |
| Item model number | FH20 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Size | pocket size |
| Color | White and Orange |
| Shape | square |
| Thickness | 0.7 Inches |
| Power Source | Battery Powered |
| Voltage | 120 Volts |
| Number Of Pieces | 1 |
| Cutting Diameter | 3.9 Inches |
| Measurement System | english/standard |
| Special Features | Portable |
| Included Components | Charger |
| Batteries Included? | Yes |
| Average Battery Life | 3 	years |
| Assembled Diameter | 3.9 Inches |

## Product Details

- **Brand:** Santacary
- **Power Source:** Battery Powered
- **Color:** White and Orange
- **Item Weight:** 2.7 Ounces
- **Manufacturer:** Santacary Technology Co., Ltd.
- **UPC:** 702383994227

## Images

![Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator - Image 1](https://m.media-amazon.com/images/I/61jyS+YnBPL.jpg)
![Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator - Image 2](https://m.media-amazon.com/images/I/61k850Y9n5L.jpg)
![Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator - Image 3](https://m.media-amazon.com/images/I/61lgVtFxSRL.jpg)
![Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator - Image 4](https://m.media-amazon.com/images/I/61VgQhJufoL.jpg)
![Pocket HCHO Monitor Detector For Home Use, Formaldehyde Oxymethylene, Temperature and Humidity Air Quality Monitor FH20, Mini AQI Datalogger Indoor Indicator - Image 5](https://m.media-amazon.com/images/I/71IAwv07EdL.jpg)

## Customer Reviews

### ⭐⭐ 







  
  
    I assumed that we had a horrible problem with formaldehyde outgassing in our home
  

*by R***D on Reviewed in the United States on January 26, 2015*

It appeared to work when I took it out of the box and immediately gave me a high reading (0.37 ppm). I assumed that we had a horrible problem with formaldehyde outgassing in our home! The next morning we were cooking pancakes and it started reading very high again. Then it settled and the same thing happened with dinner. It seems very sensitive, but sensitive to smells/food, not formaldehyde (the unit was no where near the kitchen.) We live in a 12 year old home that is very tight and I wanted to make sure that we don't have a problem because of some health issues that I am having. I can't tell from this unit because it goes crazy when we cook. We are going to hire a professional company to determine the quality of our air. Wish this unit had worked for me.

### ⭐⭐⭐⭐ 







  
  
    Seems to be doing what it is supposed to do.
  

*by J***R on Reviewed in the United States on March 20, 2015*

It initially took about a day to settle down to consistent readings. I bought it to check whether my Lumber Liquidator's bamboo floor was one of the problematic ones with glue problems. Unlike my radon meter, I have not been able to find a cheap laboratory test that I can expose and mail back to to the lab to check the readings. So, verifying the meter's accuracy is a problem.

### ⭐⭐⭐⭐ 







  
  
    good luck.
  

*by N***S on Reviewed in the United States on April 3, 2015*

Once you rule out other factors (gases)it worked well......I was checking wood flooring ...so I first put the device in a large glass bowl  with a glass lid and allowed the meter to stabilize at one reading...then I put a 6 inch section of wood flooring in the glass bowl until the meter also stabilized...subtract the two readings and you will have a somewhat accurate reading...good luck.

---

## 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.co.th/products/10335594-pocket-hcho-monitor-detector-for-home-use-formaldehyde-oxymethylene-temperature](https://www.desertcart.co.th/products/10335594-pocket-hcho-monitor-detector-for-home-use-formaldehyde-oxymethylene-temperature)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-23*