--- product_id: 152887990 title: "UK Certificate 4 Gas Detector by FORENSICS | O2, CO, H2S, LEL | USB Recharge | Sound, Light & Vibration Alarms | Large Display & Backlight | UK USA Calibration Certificate" brand: "forensics detectors fd" price: "18671356₫" currency: VND in_stock: true reviews_count: 5 category: "Forensics Detectors Fd" url: https://www.desertcart.vn/products/152887990-uk-certificate-4-gas-detector-by-forensics-o2-co-h2s store_origin: VN region: Vietnam --- # USB rechargeable 2000mAh Li-ion battery Tri-mode alarms: sound, light & vibration 4 high-precision electrochemical sensors UK Certificate 4 Gas Detector by FORENSICS | O2, CO, H2S, LEL | USB Recharge | Sound, Light & Vibration Alarms | Large Display & Backlight | UK USA Calibration Certificate **Brand:** forensics detectors fd **Price:** 18671356₫ **Availability:** ✅ In Stock ## Summary > 🚀 Stay ahead of danger with precision and power in your pocket! ## Quick Answers - **What is this?** UK Certificate 4 Gas Detector by FORENSICS | O2, CO, H2S, LEL | USB Recharge | Sound, Light & Vibration Alarms | Large Display & Backlight | UK USA Calibration Certificate by forensics detectors fd - **How much does it cost?** 18671356₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/152887990-uk-certificate-4-gas-detector-by-forensics-o2-co-h2s) ## 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:** IP65 waterproof, dust-proof, explosion-proof design built for the toughest industrial environments. - • **All-in-One Detection:** Monitors O2, CO, H2S, and combustible gases with rapid response time under 30 seconds. - • **Instant Safety Alerts:** Customizable audio, visual, and vibration alarms keep you instantly informed on hazardous gas levels. - • **Plug & Play Confidence:** Factory calibrated and QA certified — just unbox, power on, and stay protected. - • **Precision You Can Trust:** USA NIST traceable calibration ensures industry-leading accuracy ≤±5% F.S. ## Overview The FORENSICS UK Certificate 4 Gas Detector is a robust, factory-calibrated multi-gas monitor featuring four high-quality electrochemical sensors for Oxygen, Carbon Monoxide, Hydrogen Sulfide, and Combustible gases. It offers rapid detection with ≤±5% accuracy, tri-mode alarms (sound, light, vibration), and a large backlit display. Designed for industrial professionals, it boasts IP65 protection, explosion-proof certification, USB rechargeable battery, and comes with a UK/USA calibration certificate for guaranteed reliability. ## Description A basic multi-gas detector by FORENSICS with basic and simple functions, yet incorporates high quality sensors. The detector is USA NIST traceable calibrated in Los Angeles. Simple large LCD and with backlight. Robust for industrial use for utility workers, refinery workers, firefighters, maintenance engineers, those who spend time in sewers and waterworks, underground storage tanks, oil rigs, in tanks and silos in the maritime industry, and many others who need personal protective equipment to know that the atmosphere is healthy. Product comes with the Multi-Gas Detector, English Manual, Computer USB recharge cable, Charger, Calibration Cover, metal belt clip and nut to secure cap. 100% customer satisfaction. Comes FACTORY CALIBRATED. Open the box, turn ON and GO. 100% QA by real sensor and gas detector engineers. 100% product test and verification in California, USA! 100% quality guaranteed. Arrives with calibration and QA certificate. Specifications: Natural diffusion sampling method (no pump). Combustible gas (LEL) 0-100% with 1% resolution. Oxygen (O2) 0-30% with 0.1% resolution. Carbon Monoxide (CO) 0-999 with 1ppm resolution. Hydrogen Sulfide (H2S) 0-100ppm with 1ppm resolution. Comes factory calibrated. Accuracy: ≤±5% F.S. Response Time: ≤30s. Working environment: -20℃～50℃, ＜95%RH (no dew). Power Source: DC3.7V Li-on battery, 2000mAh. Gas Sensor Life: 2-3 years. Explosion-proof grade: Ex ib IIa T4. Protection Grade: IP65. Weight: 230g (with battery). Dimensions: 130mm×67mm×30mm (L × W × H). 100% customer satisfaction. 100% QA by real sensor and gas detector engineers. 100% product test and verification in California, USA. 100% quality guaranteed. Arrives with calibration and QA certificate. Review: ottimo - Ottimo Review: Customer service came through! ## 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: T<30s. 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 exceeding Exib IIB T3 Gb. - 🕵️ 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 | Vibration | | Best Sellers Rank | 419,209 in DIY & Tools ( See Top 100 in DIY & Tools ) 212 in Gas Detectors | | Brand | FORENSICS DETECTORS FD | | Colour | Yellow | | Customer Reviews | 4.4 out of 5 stars 107 Reviews | | Item Weight | 272 g | | Item weight | 272 g | | Manufacturer | FORENSICS DETECTORS | | Model Number | FD-4A | | Operating Humidity | 95 percent | | Power source | Battery Powered | | Product Style | Basic | | Sensor Type | Electrochemical | | Style | Basic | | Unit Count | 1.0 count | ## Product Details - **Alarm:** Vibration - **Brand:** FORENSICS DETECTORS FD - **Colour:** Yellow - **Item weight:** 272 g - **Manufacturer:** FORENSICS DETECTORS - **Operating humidity:** 95 percent - **Power source:** Battery Powered - **Sensor type:** Electrochemical - **Style:** Basic ## Images ![UK Certificate 4 Gas Detector by FORENSICS | O2, CO, H2S, LEL | USB Recharge | Sound, Light & Vibration Alarms | Large Display & Backlight | UK USA Calibration Certificate - Image 1](https://m.media-amazon.com/images/I/615YDnPc4+L.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ ottimo *by E***O on 27 February 2020* Ottimo ### ⭐⭐⭐⭐⭐ Customer service came through! *by A***Y on 1 February 2023* ### ⭐⭐⭐⭐⭐ Good Monitor *by C***L on 31 December 2025* ## 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? - 🛒 **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.vn/products/152887990-uk-certificate-4-gas-detector-by-forensics-o2-co-h2s](https://www.desertcart.vn/products/152887990-uk-certificate-4-gas-detector-by-forensics-o2-co-h2s) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-04-23*