--- product_id: 112458852 title: "Mastercool 55900 Refrigerant Leak Detector, Blue" brand: "mastercool" price: "5310 kr" currency: NOK in_stock: true category: "Mastercool" url: https://www.desertcart.no/products/112458852-mastercool-55900-refrigerant-leak-detector-blue store_origin: NO region: Norway --- # Multi-level LED Indicators - real-time diagnostic feedback Heated Tin Oxide Sensor - ultra-sensitive detection 15.5" Flexible Probe - reach hidden leaks easily Mastercool 55900 Refrigerant Leak Detector, Blue **Brand:** mastercool **Price:** 5310 kr **Availability:** ✅ In Stock ## Summary > ❄️ Stay cool, catch leaks before they catch you! ## Quick Answers - **What is this?** Mastercool 55900 Refrigerant Leak Detector, Blue by mastercool - **How much does it cost?** 5310 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/112458852-mastercool-55900-refrigerant-leak-detector-blue) ## Best For - mastercool enthusiasts ## Why This Product - Trusted mastercool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Inclusive Kit:** Comes with leak test vial, replacement filters, batteries, and durable blow molded case—ready for any job. - • **User-Centric Design:** Ergonomic interface with volume control, sensitivity settings, and peak hold function for effortless operation. - • **Smart Leak Detection:** Intelligent probe tip minimizes false alarms by adapting to environmental conditions. - • **Certified Reliability:** Meets SAE J2791, J2913, and EN 14624 standards ensuring professional-grade accuracy and trust. - • **Pinpoint Precision, Fast Response:** Detects refrigerant leaks as small as 0.15 oz/year in under 1 second for rapid troubleshooting. ## Overview The Mastercool 55900 Refrigerant Leak Detector features a heated tin oxide sensor that detects all common refrigerants with exceptional sensitivity down to 0.15 oz/year. Certified to SAE and EN standards, it offers a 15.5" flexible probe with an intelligent tip to reduce false alarms, multi-level LED indicators for real-time diagnostics, and a user-friendly interface with peak hold and adjustable sensitivity. Packaged with essential accessories and backed by U.S.-based support, it’s the go-to tool for HVAC and automotive professionals who demand precision and reliability. ## Description Overview The Mastercool 55900 Intellasense II is a compact, professional-grade leak detector designed to deliver reliable performance in real-world HVAC and automotive environments. Using an advanced heated tin oxide sensor, it detects refrigerant leaks down to 0.15 oz/year with exceptional speed and precision. Designed for R134a, R1234yf, and all common refrigerants, this tool is fully certified to SAE J2791, J2913, and EN 14624 standards. Key Features ✔️ ADVANCED SENSOR TECHNOLOGY – Heated tin oxide sensor detects refrigerants with high accuracy ✔️ PEAK FUNCTION – Highlights the highest leak detected for multi-leak environments ✔️ INTELLIGENT TIP DESIGN – Reduces false alarms by sensing and adjusting to the environment ✔️ MULTI-COLOR LED INDICATORS – Visual signal strength and diagnostic feedback in real-time ✔️ FLEXIBLE PROBE – 15.5" gooseneck reaches tight or hidden leak zones with ease ✔️ INTERTEK CERTIFIED – Complies with J2791 (R134a), J2913 (R1234yf), and EN 14624 standards Why Mastercool With over 35 years of innovation in A/C service equipment, Mastercool builds tools trusted by technicians worldwide. The 55900 combines accuracy, durability, and ease of use—offering dependable performance for serious leak detection needs. Technical Specifications - Sensor Type: Heated tin oxide - Sensor Life: 2000 hours - Sensitivity: High (0.15 oz/yr), Medium (0.25 oz/yr), Low (0.50 oz/yr) - Response Time: Less than 1 second - Probe: 15.5" flexible probe with intelligent tip - Display: 6-level LED indicator with diagnostics - Battery: 2 "C" alkaline batteries - Battery Life: 30 hours - Certifications: SAE J2791, J2913, EN 14624 - Includes: Detector, leak test vial, filters, 2 “C” batteries, blow molded case ## Features - ✔️ HEATED TIN OXIDE SENSOR – Detects all refrigerants (CFCs, HCFCs, HFCs, and blends) with high sensitivity and fast response time - ✔️ CERTIFIED PERFORMANCE – Complies with SAE J2791 (R134a), J2913 (R1234yf), and EN 14624 standards - ✔️ SUPER SENSITIVE MODE – Enables enhanced detection of small leaks, including R1234yf and R407C - ✔️ INTELLIGENT PROBE DESIGN – 15.5” flexible probe with environment-sensing tip minimizes false alarms - ✔️ PEAK HOLD FUNCTION – Locks the highest leak signal while continuing to scan for additional leaks - ✔️ USER-FRIENDLY INTERFACE – Volume/mute control, three sensitivity levels, and LED indicators for signal strength, sensor status, and diagnostics - ✔️ INCLUDES ACCESSORIES – Comes in a blow molded case with leak test vial, replacement filters, and 2 “C” batteries - ✔️ U.S. BASED CUSTOMER SUPPORT – Reliable service from Mastercool’s New Jersey headquarters ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00RVZ6WXQ | | Best Sellers Rank | 315,822 in Automotive ( See Top 100 in Automotive ) 1,709 in Fuel System Tools 6,706 in Diagnostic, Testing & Measuring Tools | | Brand | Mastercool | | Customer Reviews | 3.8 3.8 out of 5 stars (54) | | Global Trade Identification Number | 00700376559002 | | Included Components | leak detector, molded case, 2C batteries, test vial replacement filters | | Item Dimensions | 26.4 x 6.1 x 39.4 centimetres | | Item Type Name | Refrigerant leak detector | | Item Weight | 1 Pounds | | Manufacturer | Mastercool | | Manufacturer Part Number | 55900 | | Material | Tin Oxide | | Model Number | 55900 | | Number of Items | 1 | | Product Warranty | 1 year | | Specific Uses For Product | refrigerant leak detection, HVAC, automotive | | Style Name | Intellasense II – Heated Tin Oxide Sensor | | UPC | 700376559002 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Mastercool - **Item dimensions L x W x H:** 26.4 x 6.1 x 39.4 centimetres - **Item weight:** 1 Pounds - **Material:** Tin Oxide - **Style:** Intellasense II – Heated Tin Oxide Sensor ## Images ![Mastercool 55900 Refrigerant Leak Detector, Blue - Image 1](https://m.media-amazon.com/images/I/51LbVxWwkeL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - Mastercool Refrigerant Leak Detector with Metal Oxide Gas Sensor, IntellaSense II, 55900, Blue - Mastercool 53123-YF Refillable R1234yf Oil/Dye Injector --- ## 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.no/products/112458852-mastercool-55900-refrigerant-leak-detector-blue](https://www.desertcart.no/products/112458852-mastercool-55900-refrigerant-leak-detector-blue) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-10-12*