--- product_id: 152887990 title: "FD-4A" brand: "forensics detectors fd" price: "€ 432.25" currency: EUR in_stock: true reviews_count: 5 category: "Forensics Detectors Fd" url: https://www.desertcart.sk/products/152887990-fd-4a store_origin: SK region: Slovakia --- # Multi-mode alarms: sound, light & vibration Response time under 30 seconds 4 high-precision electrochemical sensors FD-4A **Brand:** forensics detectors fd **Price:** € 432.25 **Availability:** βœ… In Stock ## Summary > 🚨 Stay Ahead of Danger with the Ultimate 4-Gas Guardian! ## Quick Answers - **What is this?** FD-4A by forensics detectors fd - **How much does it cost?** € 432.25 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/152887990-fd-4a) ## 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 - β€’ **Effortless Operation:** Turn ON and GO with a large backlit display designed for fast, clear readings in any environment. - β€’ **Precision You Can Trust:** Detect O2, CO, H2S & LEL gases with ≀±5% accuracy for critical safety decisions. - β€’ **Instant Alerts, Zero Delay:** Adjustable audio, visual, and vibration alarms ensure you never miss a hazard. - β€’ **Built to Brave the Elements:** Rugged ABS body with anti-slip grip, waterproof, dust-proof & explosion-proof certified. - β€’ **Certified & Calibrated in Europe:** Comes with UK NPL calibration certificate and 1-year warranty for guaranteed reliability. ## Overview The UK Certificate 4 Gas Detector by FORENSICS is a professional-grade multi-gas monitor featuring high-quality electrochemical sensors for Oxygen, Carbon Monoxide, Hydrogen Sulfide, and Combustibles. It delivers rapid detection with ≀±5% accuracy and under 30 seconds response time. Equipped with customizable sound, light, and vibration alarms, a large backlit display, and a rugged, explosion-proof design, it’s calibrated in Europe and backed by a 1-year warrantyβ€”perfect for industrial safety in utilities, refineries, and emergency services. ## Description Product Description 4 gas detectors and multi-gas detectors Forensics Detectors offers sensitive 4 gas and multi-gas detectors for professional use. Ideal for utilities, refineries, fire brigades and maintenance teams, as well as for work in sewers, waterworks, underground tanks, on oil rigs. 4 gas detectors Easy to use. This is our base 4 gas detector from Forensics Detectors. It is user-friendly and equipped with high-quality sensors. Large LCD display with backlight. Robust and ideal for industrial use, e.g. For employees of utilities, refineries, fire brigades, maintenance technicians as well as for anyone working in sewers, waterworks, underground storage tanks, on oil platforms, in tanks and silos of shipping. EU calibration Rely on the highest accuracy of your gas detection. This is ensured by best calibration procedures with EU traceable sources. The calibration of this gas detector is done in the laboratory of Forensics Detectors. Included in the box contents Stainless steel belt clip Calibration cap and screw USB charging cable EU calibration document Based in the EU User manual (English language not guaranteed) Technical specifications Review: ottimo - Ottimo Review: Customer service came through! - My original review is below. The first unit I received had a bad 02 sensor. Sarah reached out to me and within a few days I received a replacement unit. No issue with the replacement, customer service was willing to help and now everything is all good. Thanks Sarah and all at Forensics Detectors. I am sure that I will be purchasing other equipment in the future. I have no idea if this device is easy to use or not. Value for the money certainly does not seem to be there, and accuracy gets a 0% from me right now. The unit I received went into alarm mode when turned on for the first time and will not reset or clear. Display indicates 02 level at 0.0%, which I have to assume indicates a sensor failure or some issue with the equipment. I have sent emails, but so far I have received NO response at all. I understand that equipment fails sometimes, but with 0 time on the equipment? I am not sure that is an acceptable time between failure. Hopefully this company will reply within the next couple of days and this can be resolved. Update on this issue. Customer Support contacted me and is shipping a new unit to me, I will advise further when new item is received. ## Features - βš›οΈ SENSOR: High quality electrochemical sensors. Oxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S) and Combustibles (LEL). Turn ON and GO. - πŸŒ‡ DETECT: Detection error better than ≀±5% F.S. and response time: T<30s. Zero and span calibration options. - πŸŽ† ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarm digital time stamp. - πŸ’ͺ STRONG: Robust design made of high strength ABS and Anti-slip grip rubber. Waterproof, dust-proof and explosion-proof exceeding Exib IIB T3 Gb. - πŸ•΅οΈ TRUST: ** 1 Year warranty ** Test and Calibrated in EUROPE ** 100% quality guaranteed ** ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07J1WQST5 | | Alarm | Vibration | | Battery Average Life | 6 Hours | | Best Sellers Rank | 668,897 in DIY & Tools ( See Top 100 in DIY & Tools ) 315 in Gas Detectors | | Brand | FORENSICS DETECTORS FD | | Colour | Yellow | | Country of Origin | China | | Customer Reviews | 4.5 out of 5 stars 108 Reviews | | Item Dimensions D x W x H | 3D x 6.7W x 13H centimetres | | Item Weight | 272 g | | Item weight | 272 g | | Manufacturer | FORENSICS DETECTORS | | Model Number | FD-4A | | Operating Humidity | 95 percent | | Part Number | AQ-ODP5-281U | | Power source | Battery Powered | | Product Style | Basic | | Product dimensions | 3D x 6.7W x 13H centimetres | | Sensor Type | Electrochemical | | Style | Basic | | Unit Count | 1.0 count | ## Product Details - **Alarm:** Vibration - **Brand:** FORENSICS DETECTORS FD - **Colour:** Yellow - **Item weight:** 0.6 Pounds - **Operating humidity:** 95 percent - **Power source:** Battery Powered - **Product dimensions:** 3D x 6.7W x 13H centimetres - **Sensor type:** Electrochemical - **Style:** Basic - **Unit count:** 1.0 count ## Images ![FD-4A - Image 1](https://m.media-amazon.com/images/I/61Mkb1S3oeL.jpg) ![FD-4A - Image 2](https://m.media-amazon.com/images/I/81ms3OUzNnL.jpg) ![FD-4A - Image 3](https://m.media-amazon.com/images/I/614xjjiIHML.jpg) ![FD-4A - Image 4](https://m.media-amazon.com/images/I/81qH-Vy3jkL.jpg) ![FD-4A - Image 5](https://m.media-amazon.com/images/I/719hdf6QvRL.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 β€Ž6 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ ottimo *by E***O on 27 February 2020* Ottimo ### ⭐⭐⭐⭐⭐ Customer service came through! *by A***Y on 1 February 2023* My original review is below. The first unit I received had a bad 02 sensor. Sarah reached out to me and within a few days I received a replacement unit. No issue with the replacement, customer service was willing to help and now everything is all good. Thanks Sarah and all at Forensics Detectors. I am sure that I will be purchasing other equipment in the future. I have no idea if this device is easy to use or not. Value for the money certainly does not seem to be there, and accuracy gets a 0% from me right now. The unit I received went into alarm mode when turned on for the first time and will not reset or clear. Display indicates 02 level at 0.0%, which I have to assume indicates a sensor failure or some issue with the equipment. I have sent emails, but so far I have received NO response at all. I understand that equipment fails sometimes, but with 0 time on the equipment? I am not sure that is an acceptable time between failure. Hopefully this company will reply within the next couple of days and this can be resolved. Update on this issue. Customer Support contacted me and is shipping a new unit to me, I will advise further when new item is received. ### ⭐⭐⭐⭐⭐ Good Monitor *by C***L on 31 December 2025* Works as intended and included the certificate! ## Frequently Bought Together - USA NIST Calibrated 4 Gas Monitor by Forensics | O2, CO, H2S, LEL | USB Recharge | - FORENSICS DETECTORS FD 4 Gas Monitor + Pump | USA NIST Calibration Certificate | USB Recharge | Sound, Light & Vibration Alarms | - Allegro Industries-9533-25 32" X 13 12" X 14 12" 831 cfm 13 hp 115 VAC 3 A Motor Polyethylene Com-Pax-Ial Blower with Canister and 8" X 25' Duct,Orange --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/152887990-fd-4a](https://www.desertcart.sk/products/152887990-fd-4a) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-05*