---
product_id: 60835063
title: "FD-4S"
brand: "forensics detectors fd"
price: "€ 523.37"
currency: EUR
in_stock: true
reviews_count: 12
category: "Forensics Detectors Fd"
url: https://www.desertcart.at/products/60835063-fd-4s
store_origin: AT
region: Austria
---

# Vivid color display NIST-certified data logging 4-gas electrochemical sensors FD-4S

**Brand:** forensics detectors fd
**Price:** € 523.37
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay safe, stay sharp: The pro’s choice for 4-gas monitoring!

## Quick Answers

- **What is this?** FD-4S by forensics detectors fd
- **How much does it cost?** € 523.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/60835063-fd-4s)

## Best For

- forensics detectors fd enthusiasts

## Why This Product

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

## Key Features

- • **Rugged & Ready:** Built with high-strength ABS and anti-slip rubber grip, this compact powerhouse clips securely to your gear for all-day durability.
- • **Certified Accuracy:** Comes factory-calibrated with a USA NIST certificate, ensuring reliable, traceable measurements you can trust on every job.
- • **Vibrant Color Display:** Instantly read multi-gas levels with a sharp, intuitive color screen and graph functions that keep you ahead of hazards.
- • **Precision 4-Gas Detection:** Monitors Oxygen, CO, H2S, and Combustible gases simultaneously with lab-grade electrochemical sensors for unmatched safety assurance.
- • **Smart Power & Portability:** Recharge via USB—ditch bulky chargers—and enjoy multi-shift battery life, so you never miss a beat on site.

## Overview

The Multigas 4 Gas Monitor by FORENSICS DETECTORS FD is a compact, lightweight device engineered for professional-grade detection of Oxygen, Carbon Monoxide, Hydrogen Sulfide, and Combustible gases. Featuring a vivid color display with graphing, USA NIST-certified calibration, and robust ABS construction with anti-slip grip, it offers reliable, portable safety monitoring with USB rechargeable battery life lasting multiple shifts. Ideal for industrial, maritime, and inspection professionals demanding precision and durability.

## Description

Multigas 4 Gas Monitor | with USA NIST Calibration Certificate | CO, H2S, CO, EX LEL |: desertcart.com: Tools & Home Improvement

Review: Works as advertised - Does the job.
Review: It works perfectly - I am vetting inspector working on board ocean going Petroleum and Gas ships. As a part of my job and to be a good role model to the ships crew, I carry this personal gas detector with me. I bought it 3 months ago. It works perfectly. Battery - I use it for about 3 hours every ship and it lasts about 3 ships ebfore recharging. I also like that it has a usb recharge and no need to carry a separate bulky charger. It clips on the boiler suit pocket. It also looks very stylish. It does the job from the safety point of view. It arrived with a calibration document valid for 12 months. I highly recommend it.

## Features

- 🌈 COLOR DISPLAY: Color screen and Graph functions.
- 🔬 DETECT: Oxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S) and Combustibles (LEL).
- 📲 DATA LOGGING: Detectors 4 gas with USA NIST factory calibration.
- 💪 STRONG: Robust design made of high-strength ABS and Anti-slip grip rubber.
- 🕵️ TRUST: ** 1 year limited warranty ** Arrives with calibration and QA certificate **

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B4LKGQM |
| Alarm | Visual |
| Best Sellers Rank | #154,838 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #107 in Gas Detectors & Alarms |
| Brand | FORENSICS DETECTORS FD |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (98) |
| Item Dimensions D x W x H | 1.18"D x 2.64"W x 5.12"H |
| Item Weight | 3.2 ounces |
| Manufacturer | FORENSICS |
| Model Number | FD-4S |
| Operating Humidity | 95 percent |
| Power Source | Battery Powered |
| Product Style | Gas Detector |
| Sensor Type | Electrochemical |
| Unit Count | 1 Count |

## Product Details

- **Alarm:** Visual
- **Battery Life:** 12 Hours
- **Brand:** FORENSICS DETECTORS FD
- **Color:** Black
- **Item Weight:** 3.2 ounces
- **Operating Humidity:** 95 percent
- **Power Source:** Battery Powered
- **Product Dimensions:** 1.18"D x 2.64"W x 5.12"H
- **Sensor Type:** Electrochemical
- **Style:** Gas Detector

## Images

![FD-4S - Image 1](https://m.media-amazon.com/images/I/71xfuChWhlL.jpg)

## Questions & Answers

**Q: when measuring oxygen readings, can you set a range of time, duration or frequency for data logging?**
A: Great question, see video for a detailed answer.

**Q: will this unit pick up propane and natural gas leaks during a home inspection?**
A: This is not made to pick up leaks during a home inspection. What would be more appropriate is a gas leak detector with GOOSE NECK. The gas leak detector is more sensitive (in ppm) range where this detector is a LEL % detector, for exposure safety purposes.

**Q: Does this 4 gas detector come with a clip to attach to my FR shirt?**
A: The detector has installed on its back a belt clip. Thanks

**Q: Is there a calibration kit available?**
A: The detector comes with a calibration cap to be plugged into calibration gas.
 For calibration, a standard mixed gas NIST gas bottle with a regulator will work very well. Our recommended product is ASIN: B015O16X32.
Multi Calibration Gas: 25 PPM Hydrogen Sulfide, 100 PPM Carbon Monoxide, 2.5% (50% LEL) Methane, 19% Oxygen, Balance Nitrogen

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as advertised
*by F***H on January 31, 2026*

Does the job.

### ⭐⭐⭐⭐⭐ It works perfectly
*by M***N on September 6, 2019*

I am vetting inspector working on board ocean going Petroleum and Gas ships. As a part of my job and to be a good role model to the ships crew, I carry this personal gas detector with me. I bought it 3 months ago. It works perfectly. Battery - I use it for about 3 hours every ship and it lasts about 3 ships ebfore recharging. I also like that it has a usb recharge and no need to carry a separate bulky charger. It clips on the boiler suit pocket. It also looks very stylish. It does the job from the safety point of view. It arrived with a calibration document valid for 12 months. I highly recommend it.

### ⭐⭐⭐⭐⭐ Very nice gas monitor
*by R***O on January 27, 2024*

Very nice product, can definitely compete with the more known brands. It keeps up very well. Battery life is satisfactory it keep stamina a full day. We use it in a HVAC setup, to enter steam/hot water boilers. cleaning, repairs (refractory, tube repairs) and inspection of the boilers. So you got an idea what conditions we expose it to.

## Frequently Bought Together

- Multigas 4 Gas Monitor | with USA NIST Calibration Certificate | CO, H2S, CO, EX LEL |
- Gas Sampling Pump by Forensics | Stainless Steel Probe | Made for Gas Detectors & Meters | Flow Rate: 0.5LPM, 500cc/min | Strong ABS | USB Recharge |

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-05-06*