---
product_id: 21292477
title: "FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress"
brand: "santacary"
price: "703CFA"
currency: XOF
in_stock: false
reviews_count: 4
url: https://www.desertcart.sn/products/21292477-fh20-pocket-formaldehyde-oxymethylene-meter-monitor-detector-hcho-monitor-temperature
store_origin: SN
region: Senegal
---

# 0.01 mg/m³ detection precision 15+ days continuous monitoring Temp & humidity integrated FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress

**Brand:** santacary
**Price:** 703CFA
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Breathe Smart, Live Confidently — Your Pocket Guardian Against Hidden Toxins

## Quick Answers

- **What is this?** FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress by santacary
- **How much does it cost?** 703CFA with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/21292477-fh20-pocket-formaldehyde-oxymethylene-meter-monitor-detector-hcho-monitor-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

- • **Trend Tracking:** Unique 24+ hour trend function visualizes formaldehyde fluctuations to stay ahead of air quality risks.
- • **Long-Lasting Power:** Low-power electrochemical sensor supports over 15 days of continuous use, minimizing interruptions.
- • **Pinpoint Precision:** Detects ultra-low formaldehyde levels down to 0.01 mg/m³ for a safer indoor environment.
- • **All-in-One Monitoring:** Simultaneously measures formaldehyde, temperature (°C/°F), and relative humidity for comprehensive insights.
- • **Ultra Portable & Sleek:** At just 2.7 oz and 17mm thick, it’s the world’s smallest formaldehyde monitor—perfect for on-the-go professionals.

## Overview

The Santacary FH20 is a compact, electrochemical formaldehyde meter calibrated by OWLSTONE OVG-4, capable of detecting hazardous formaldehyde vapors as low as 0.01 mg/m³. It features automatic temperature compensation, a unique 24-hour trend display, and simultaneous temperature and humidity monitoring. Lightweight and portable, it offers over 15 days of continuous monitoring with a splash-resistant design, making it ideal for office, home, and on-the-go air quality assurance.

## Description

Santacary FH20 is a mini style, patent pending precise indoor air quality monitor suitable for monitoring low level concentrations of hazardous formaldehyde vapors in both ppm (parts per million) and mg/m3. It uses an electrochemical sensor for formaldehyde detection. FH20 can measure formaldehyde concentration in a range of 0-5ppm and a resolution of 0.01 ppm. 1).Santacary FH20 is calibrated by OWLSTONE OVG-4 Calibration Gas Generator. 2).With temperature correction Small Range of Interference: The FH20 meter is not totally specific to formaldehyde alone, being susceptible to a degree of interference from a small range of other chemicals. Super low power for Long time monitoring：With fully charged FH20 is a low carbon instrument and is capable of over 15 days continuous monitoring formaldehyde concentration. The concentration can be shown in trend curve and help people to understand the changing of Indoor formaldehyde. Easy cleaning：A splash resistant front panel makes front panel cleaning that much easier. Easy to Be Carried Out：With thickness of 17mm and weight of 2.65 oz., FH20 should be the smallest formaldehyde monitor in the world up to now. In addition to measuring the formaldehyde concentration, the Santacary FH20 can also measure the ambient temperature and the relative humidity. Note: The formaldehyde monitor must be placed in a well ventilated place outdoors until reduced to 0.05ppm / 0.06mg/m3 or lower following readings before usage.

Review: Great handheld Formaldehyde Test Unit - This little device really works well! Has good battery life but comes with AC charger as well. Seller has GREAT support. Had a small issue with the first unit I purchased having to do with the battery, and they (and manufacturer) promptly replaced it. I like the historical graph view of the product showing past values for comparison. If you need to test for formaldehyde in your environment, I would recommend this product.
Review: nope - never worked, never reset to zero. have no idea what to do. did refund my account quickly, and paid for return shipping. so, good customer service. lousy product.

## Features

- Santacary FH20 is a precise formaldehyde monitor for detecting low level concentrations (0.01 mg/m3) of hazardous formaldehyde vapors in houses, offices, classroomes, or cars.
- FH20 is calibrated by OWLSTONE OVG-4 Formaldehyde Calibration GAS Generator. There is also automatic temperature compensation in formaldehyde measurement.
- Exposing in 3.0mg/m3 of formaldehyde concentration will cause biting sensation in eyes and nose. FH20 did not measure such outrageous results in general environment (when in stable reading).
- It is the only product in the market that has trend function to show the formaldehyde change in more than 24 hours.
- FH20 can measure the ambient temperature with selectable °C or °F and the relative humidity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B018SUBQCE |
| Batteries | 1 Lithium Ion batteries required. |
| Batteries Included? | No |
| Batteries Required? | No |
| Brand | Santacary |
| Color | White, orange |
| Customer Reviews | 3.6 3.6 out of 5 stars (5) |
| Date First Available | December 1, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.7 ounces |
| Item model number | FH20 |
| Manufacturer | Santacary Technology |
| Operating Humidity | 97 percent |
| Part Number | FH20 |
| Product Dimensions | 3.9 x 0.7 x 2.4 inches |
| Sensor Type | Electrochemical |
| UPC | 712306143007 |

## Product Details

- **Brand:** Santacary
- **Color:** White, orange
- **Item Weight:** 2.7 Ounces
- **Manufacturer:** Santacary Technology
- **Operating Humidity:** 97 percent
- **Sensor Type:** Electrochemical
- **UPC:** 712306143007

## Images

![FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress - Image 1](https://m.media-amazon.com/images/I/61k850Y9n5L.jpg)
![FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress - Image 2](https://m.media-amazon.com/images/I/71zFcCxvxoL.jpg)
![FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress - Image 3](https://m.media-amazon.com/images/I/61+0C0Ku33L.jpg)
![FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress - Image 4](https://m.media-amazon.com/images/I/51Fa6RmQeEL.jpg)
![FH20 Pocket Formaldehyde (Oxymethylene) Meter Monitor Detector HCHO Monitor Temperature Humidity Moisture Meter with Alarm for Office Home Gardening Furniture Wooden Floor Mattress - Image 5](https://m.media-amazon.com/images/I/51YJj+4HbZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great handheld Formaldehyde Test Unit
*by R***S on August 3, 2016*

This little device really works well! Has good battery life but comes with AC charger as well. Seller has GREAT support. Had a small issue with the first unit I purchased having to do with the battery, and they (and manufacturer) promptly replaced it. I like the historical graph view of the product showing past values for comparison. If you need to test for formaldehyde in your environment, I would recommend this product.

### ⭐ nope
*by O***M on July 8, 2016*

never worked, never reset to zero. have no idea what to do. did refund my account quickly, and paid for return shipping. so, good customer service. lousy product.

### ⭐⭐ Santacary FH20 Formaldehyde Sensor
*by C***R on April 2, 2016*

I have 2 other detection devices, this one doesn't come close to agreeing with the other two. This one seems to be low on its readings, or perhaps the other two were high on their readings. At any rate, I am still not confident on the formaldehyde levels in this home and this detector. This unit reads 0.01 the other 2 devices read up to 3.0 a big difference. I am not impressed. The other two units are the UT938C and the UT338A both seem to be more responsive and similar in readings. I put the FH20 in multiple controlled environment tests in an enclosed device , each time the unit gave me different readings (not small differences) I have been in touch with the supplier (via 7 email exchanges) and explained what I was seing. At no time did the supplier offer to replace or test the unit, her focus was only on getting a better score on Amazon, not on the calibration or customer concerns. I gave it two stars as I do enjoy the design of the unit, the battery life, and the red/yellow/green LED's used for easy notification, however the LED's weren't noticeable in bright daylight. I could not rate the FH20 any higher due to the reading issues that I was noticing. Waste of money...

---

## 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.sn/products/21292477-fh20-pocket-formaldehyde-oxymethylene-meter-monitor-detector-hcho-monitor-temperature](https://www.desertcart.sn/products/21292477-fh20-pocket-formaldehyde-oxymethylene-meter-monitor-detector-hcho-monitor-temperature)

---

*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-09-18*