--- product_id: 452662637 title: "4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode." brand: "haokesite" price: "5124162₫" currency: VND in_stock: true reviews_count: 8 category: "Haokesite" url: https://www.desertcart.vn/products/452662637-4-gas-monitor-rechargeable-portable-gas-detector-h2s-o2-co store_origin: VN region: Vietnam --- # Clear LCD with real voice alerts 1800mAh long-lasting battery 4-in-1 multi-gas detection 4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. **Brand:** haokesite **Price:** 5124162₫ **Availability:** ✅ In Stock ## Summary > 🛠️ Stay ahead of danger with the pro-grade 4-in-1 gas guardian! ## Quick Answers - **What is this?** 4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. by haokesite - **How much does it cost?** 5124162₫ 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/452662637-4-gas-monitor-rechargeable-portable-gas-detector-h2s-o2-co) ## Best For - haokesite enthusiasts ## Why This Product - Trusted haokesite brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting Power:** High-capacity 1800mAh rechargeable battery keeps you protected through extended shifts. - • **Multi-Mode Alarm System:** Stay instantly informed with sound, vibration, light, and voice alerts—never miss a hazard. - • **Rugged & Portable Design:** Durable ABS casing with non-slip grip and clip-on convenience for on-the-go professionals. - • **Factory-Calibrated Precision:** Accurate readings out-of-the-box with easy calibration and adjustable alarm thresholds. - • **Comprehensive 4-Gas Detection:** Detects EX (LEL), H2S, O2, and CO simultaneously for ultimate safety assurance. ## Overview The HAOKESITE 4 Gas Monitor is a professional-grade portable detector engineered to simultaneously monitor combustible gases (LEL), hydrogen sulfide (H2S), oxygen (O2), and carbon monoxide (CO). Featuring a bright LCD display, real voice alerts, and a robust 1800mAh rechargeable battery, it ensures reliable, on-the-spot safety for industrial and confined space workers. Its rugged ABS body with a clip design offers durability and portability, while multi-mode alarms (sound, vibration, light, voice) guarantee immediate hazard awareness. Factory calibrated and user-adjustable, this device is a must-have for proactive workplace safety. ## Description Product description 4 Gas Detector PACKING 1、Multi Gas Monitor. 2、Stainless Steel Clip. 3、Calibration Cap and Screw. 4、USB Charging Cable. 5、English Manual. Open and Use It Directly Detector meter is widely used in petroleum, chemical industry, archaeology with other industries and places that need safety monitoring for toxicity and harmfulness. Product has an excellent protection mechanism for people. Comes factory calibrated. The detector can effectively predict the concentration of dangerous gases and alarm. Easy to use and maintain Water Proof Dust-Proof Explosion-Proof Technical Parameter About Us We are a factory. A high-tech enterprise specializing in the development, manufacture, installation of flammable and toxic gas concentration monitoring, alarm and linkage systems and providing professional solutions. Review: Fast shipping and outstanding product - HSE safety is important, we like to keep new 4 gas analyzers in stock in the event of a detector going over its time limits. Review: 4 Gas Monitor - Product shipped extremely fast. A great value for your money. ## Features - 【Four Alarm Modes】4 in 1 gas detector can detect EX (0-100% LEL), H2S (PPM), O2 (0-30% VOL), CO (PPM). When the dangerous gas content in the air is too high. Gas monitors will remind you that the place is dangerous within 30S through four methods: human voice, 120 decibel alarm, vibration and light. - 【LCD Display and Battery】Multi gas monitor has an LCD display that allows you to easily read the screen data, the readings are very reliable, it is an excellent device to ensure the safety of workers when we are undergrounding construction and confining space work. We use 1800mAh high-capacity lithium battery to ensure that the product can be used for a long time. - 【Advanced Technology】Compared with other products, we use real voice prompts to allow users to quickly understand the product. And we come with a calibration cap, you can use a plastic tube to put the gas in, it can measure gas concentration more accurately. Comes FACTORY CALIBRATED, open and use it directly. - 【Materials and Design】In terms of equipment material, it is made of high-strength ABS and non-slip grip rubber, small size and unique clip design, which can be clipped on clothes when use it. Good shock resistance, dust-proof, waterproof and explosion-proof functions. When you are in a closed or hypoxic environment, you don't want it to sound the alarm all the time, all four gases can be adjusted to your desired threshold (within the range). - 【Packaging and Customer Service】Adoption hard metal outer box packaging, it is convenient for you to carry out, and the product can reach your hands in good condition. In addition, we are willing to provide you with unconditional returns and exchanges within 90 days. If you have any questions, please contact us by email, we will try our best to help you solve the problem. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B46LG754 | | Alarm | Sound, Vibration, Alarm Light, Display Screen | | Best Sellers Rank | #180,272 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #116 in Gas Detectors & Alarms | | Brand | HAOKESITE | | Color | black | | Customer Reviews | 3.8 out of 5 stars 70 Reviews | | Enclosure Material | ABS | | Item Weight | 10.6 Ounces | | Manufacturer | HAOKESITE | | Mfr Part Number | PLT840-4 | | Model Number | PLT840-4 | | Number of Items | 1 | | Operating Humidity | < 95%RH | | Power Source | Battery Powered | | Product Style | Gas Detector | | Sensor Type | Electrochemical | | Style | Gas Detector | | Unit Count | 1.0 Count | ## Product Details - **Alarm:** Sound, Vibration, Alarm Light, Display Screen - **Brand:** HAOKESITE - **Color:** black - **Item Weight:** 10.6 Ounces - **Material:** ABS - **Number of Items:** 1 - **Operating Humidity:** < 95%RH - **Power Source:** Battery Powered - **Sensor Type:** Electrochemical - **Style:** Gas Detector ## Images ![4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. - Image 1](https://m.media-amazon.com/images/I/5116w5AFHTL.jpg) ![4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. - Image 2](https://m.media-amazon.com/images/I/61JfbMu3jjL.jpg) ![4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. - Image 3](https://m.media-amazon.com/images/I/71EPYN4qIoL.jpg) ![4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. - Image 4](https://m.media-amazon.com/images/I/61iJ7oeob8L.jpg) ![4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. - Image 5](https://m.media-amazon.com/images/I/61ksJintnML.jpg) ## Questions & Answers **Q: How long is the service life of this sensor, is it the life after opening?** A: The service life of the product is about 15-24 months after you unpack it. **Q: Does this detect Radon?** A: No it does not. **Q: Will this detect ethanol (alcohol) ?** A: Yes,it can. the equipment is a gas detector. Ethanol is a volatile liquid at room temperature. You can smear ethanol on the table or hand, and then place the detector above the ethanol to detect the volatile gas of ethanol. **Q: What regulator/ flow is needed for the calibraition gas** A: You need to calibrate it at a local professional gas detector facility, as it requires a corresponding machine for operation. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fast shipping and outstanding product *by R***E on November 14, 2023* HSE safety is important, we like to keep new 4 gas analyzers in stock in the event of a detector going over its time limits. ### ⭐⭐⭐⭐⭐ 4 Gas Monitor *by A***R on May 27, 2023* Product shipped extremely fast. A great value for your money. ### ⭐ HORRIBLE CUSTOMER SERVICE *by M***R on May 16, 2026* Appeared to be sub-par quality. Requested a return and the company is delaying the refund. Item was NEVER used, and returned in original packaging. They have received the item and still haven't issued a refund. This company is not a legit, above board company. DO NOT BUY THIS COMPANY'S PRODUCTS. POOR CUSTOMER SERVICE AND POOR QUALITY. ## Frequently Bought Together - HAOKESITE 4 Gas Monitor Rechargeable Portable Gas Detector H2S O2 CO and LEL Multi Gas Monitor Professional Gas Sniffer with LCD Display Sound Light Vibration Alarm Mode. - Gas Detector, CHNADKS 4 Gas Monitor H2S,O2,CO and LEL Multiple Indicator with Vibration, Audible, Visual 4 Gas Monitor Personal Rechargeable Gas Sniffer Alarm with LCD - BW Technologies Corded Electric BWC2-H BW Clip Single Gas H2S Monitor, 10/15 (1 Pack) --- ## 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/452662637-4-gas-monitor-rechargeable-portable-gas-detector-h2s-o2-co](https://www.desertcart.vn/products/452662637-4-gas-monitor-rechargeable-portable-gas-detector-h2s-o2-co) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-04*