---
product_id: 91493820
title: "USA NIST Calibrated 4 Gas Monitor by Forensics | O2, CO, H2S, LEL | USB Recharge |"
brand: "forensics detectors fd"
price: "1587.60 DT"
currency: TND
in_stock: true
category: "Forensics Detectors Fd"
url: https://www.desertcart.tn/products/91493820-usa-nist-calibrated-4-gas-monitor-by-forensics-o2-co
store_origin: TN
region: Tunisia
---

# USB rechargeable battery, 6-hour life Response time < 30 seconds NIST-traceable electrochemical sensors USA NIST Calibrated 4 Gas Monitor by Forensics | O2, CO, H2S, LEL | USB Recharge |

**Brand:** forensics detectors fd
**Price:** 1587.60 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay ahead of danger with precision and power in your pocket!

## Quick Answers

- **What is this?** USA NIST Calibrated 4 Gas Monitor by Forensics | O2, CO, H2S, LEL | USB Recharge | by forensics detectors fd
- **How much does it cost?** 1587.60 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/91493820-usa-nist-calibrated-4-gas-monitor-by-forensics-o2-co)

## 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:** Durable ABS casing with anti-slip grip, waterproof, dust-proof, and explosion-proof for any environment.
- • **Instant Safety Alerts:** Customizable audio, visual, and vibration alarms with digital time stamps keep you instantly informed.
- • **Plug & Play Simplicity:** Turn ON and GO with zero and span calibration options for hassle-free operation.
- • **Precision You Can Trust:** USA NIST calibrated sensors ensure industry-leading accuracy for O2, CO, H2S, and LEL detection.
- • **Certified Quality Assurance:** Comes with a 1-year warranty, calibration certificate, and 100% USA product testing for peace of mind.

## Overview

The USA NIST Calibrated 4 Gas Monitor by Forensics is a professional-grade digital gas detector featuring high-quality electrochemical sensors for Oxygen, Carbon Monoxide, Hydrogen Sulfide, and Combustibles (LEL). It offers rapid detection with less than 30 seconds response time, customizable multi-mode alarms, and a rugged, waterproof design. USB rechargeable with a 6-hour battery life, it arrives fully certified with a 1-year warranty and USA-based quality assurance, making it an essential tool for safety-conscious professionals.

## Description

USA NIST Calibrated 4 Gas Monitor by Forensics | O2, CO, H2S, LEL | USB Recharge |: desertcart.com: Tools & Home Improvement

## Features

- ⚛️ SENSOR: High quality electrochemical sensors. USA NIST traceable calibration. Oxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S) and Combustibles (LEL). Turn ON and GO.
- 🌇 DETECT: Detection error better than ≤±5% F.S. and response time: < 30 sec. Zero and span calibration options.
- 🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarm digital time stamp.
- 💪 STRONG: Robust design made of high strength ABS and Anti-slip grip rubber. Waterproof, dust-proof and explosion-proof.
- 🕵️ TRUST: ** 1 year limited warranty ** Arrives with calibration and QA certificate ** 100% product test and verification in the USA ** 100% quality guaranteed **

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07J1WQST5 |
| Alarm | Audible, Vibration, Visual |
| Battery Average Life | 6 hours |
| Best Sellers Rank | #113,181 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #72 in Gas Detectors & Alarms |
| Brand | FORENSICS DETECTORS FD |
| Color | Black, Yellow |
| Customer Reviews | 4.4 4.4 out of 5 stars (126) |
| Item Dimensions D x W x H | 1.18"D x 2.64"W x 5.12"H |
| Item Weight | 9.6 ounces |
| Manufacturer | FORENSICS |
| Manufacturer Warranty Description | 1 Year Manufacturer |
| Mfr Part Number | AQ-ODP5-281U |
| Model Number | FD-4A |
| Operating Humidity | 95 percent |
| Power Source | Battery Powered |
| Product Style | Digital |
| Sensor Type | Electrochemical |
| Unit Count | 1 Count |

## Product Details

- **Alarm:** Audible, Vibration, Visual
- **Brand:** FORENSICS DETECTORS FD
- **Color:** Black, Yellow
- **Item Weight:** 9.6 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:** Digital
- **Unit Count:** 1 Count

## Images

![USA NIST Calibrated 4 Gas Monitor by Forensics | O2, CO, H2S, LEL | USB Recharge | - Image 1](https://m.media-amazon.com/images/I/71ZJOHse06L.jpg)

## Questions & Answers

**Q: Will this device detect ethanol?**
A: It will respond to ethanol vapor, but will not be very representative of the actual %LEL since this detector, like all, are calibrated standard to methane. If you need %LEL for ethanol we will need to special order for accurate ethanol %LEL. Thank you.

**Q: Does this unit have a belt clip or some other means with which to attach it to an individual?**
A: Yes come with an aligator belt clip.

**Q: Do you have any device that we can analyze the CO gas from vehicle**
A: No unfortunately we do not. Existing products from other companies seem to be OK options.

**Q: Conflicting info for battery life. "working battery time	> 24 hours" or "average battery life	‎6 hours". which is it? thanks!**
A: Thanks for bringing it to our attention. Battery life is well over 24 hours!
We will fix the Amazon-generated typo. Have a great day.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.tn/products/91493820-usa-nist-calibrated-4-gas-monitor-by-forensics-o2-co](https://www.desertcart.tn/products/91493820-usa-nist-calibrated-4-gas-monitor-by-forensics-o2-co)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-13*