--- product_id: 766092 title: "CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display" brand: "bbk" price: "NT$21810" currency: TWD in_stock: true reviews_count: 8 category: "Bbk" url: https://www.desertcart.tw/products/766092-cps-ls790b-leak-seeker-electronic-leak-detector-with-0-25 store_origin: TW region: Taiwan --- # 0.25 oz/yr ultra-sensitive detection High-intensity bar graph display Patented Ion-Pump sensor tech CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display **Brand:** bbk **Price:** NT$21810 **Availability:** βœ… In Stock ## Summary > πŸ”Ž Detect leaks before they detect you β€” stay ahead with CPS Leak-Seeker! ## Quick Answers - **What is this?** CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display by bbk - **How much does it cost?** NT$21810 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/766092-cps-ls790b-leak-seeker-electronic-leak-detector-with-0-25) ## Best For - bbk enthusiasts ## Why This Product - Trusted bbk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Effortless Calibration:** Automatic calibration eliminates manual adjustments, so you stay focused on the job, not the tool. - β€’ **Humidity-Proof Stability:** Built-in water vapor filter maintains accuracy even in high humidity environmentsβ€”work confidently anywhere. - β€’ **Next-Gen Ion-Pump Sensor:** Patented sensor technology guarantees reliable detection across all CFC, HCFC, and HFC refrigerants. - β€’ **Instant Visual & Audible Alerts:** Over 100 tones plus a vivid bar graph display provide real-time feedback for fast, precise leak identification. - β€’ **Pinpoint Precision Leak Detection:** Detects refrigerant leaks as small as 0.25 oz/year, ensuring no costly escapes go unnoticed. ## Overview The CPS LS790B Leak-Seeker is a cutting-edge electronic refrigerant leak detector featuring patented Ion-Pump sensor technology and an ultra-sensitive 0.25 oz/year detection threshold. Its automatic calibration and humidity-resistant design ensure consistent, accurate performance across all common refrigerants. Equipped with a high-intensity bar graph and audible alerts, it delivers fast, reliable leak detection for HVAC professionals seeking precision and efficiency. ## Description Buy CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display: Leak Detection Tools - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases Review: the detector works great. I had a town car with a leak ... - ok. I read the manual quick and got an idea of how it works, then I started using it. I usually see how I am supposed to use it, then I start playing and make it work for me and how I'll use it. This is my recommendation. First, the detector works great. I had a town car with a leak that I couldn't find otherwise and knew it was time to get a detector. Let me begin by saying...if you are a mechanic, stop wasting your time and refrigerant. Get one of these. It will save you whatever it costs on the VERY FIRST repair. I found a leaky evaporator and a leaky low side valve within 10 minutes. Both were fixed...no more leaks. Holy cow I wish I would've bought this a while ago. Forget any other method. A small leak you will NEVER find without one of these. (Before I get into it, if the system has leaked out, you need to charge it because it reads the refrigerant, not just a leak. If that isn't implied you should understand that. You need to evacuate the system and put a charge to it. Vacuum pumps are cheap and you need to do it right anyway because you'll eat compressors if you don't get the air/condensation out. the oil that's used in the systems absorb that stuff and ruins it) Ok. Here's how I use it. I gauge the leak by first turning up the sensitivity to max and waving it around the engine bay. As others have said, if it's a bad leak, it will just constantly go off. That's ok. At least you'll know it's a large leak. I start max sensitivity and wave it around...no beeping. Good. Small leak. Then start working around all the components. If it's going off like crazy, back off the sensitivity. My leaks were really small, so I worked around with max and found them. Start at the obvious spots...around the compressor, condensor, where the lines connect to each other or other things, fill valves. It will most likely not have a random hole in the middle of a steel tube. It will be something that makes sense usually (leaking seals, valve, etc.). And that's my advice. Hope that helps someone out. I am an ASE master tech if anyone is wondering. Review: Great tool - I am really impressed every time I buy something from CPS, they make real tools, that look real durable, with style and functionality. This detector has many useful functions, alarms and levels on sensibility that are a must for every AC tech. I hate cheap Chinese tools that in the end makes you look like a cheap technician, I love CPS products and I support things made in the US, I understand that companies have to cut costs and manufacturing overseas is a way to do it, but they are making customers pay for something less than they expect. ## Features - WHAT IS IT: The Leak-Seeker combines the most advanced microcomputer circuitry with field proven Ion-pump sensor technology creating a highly sensitive, accurate electronic refrigerant leak detector - CALIBRATION: Individually calibrated to detect a leak rate of better than 0.25 oz/yr (7g/yr) of HFC - PATENTED TECHNOLOGY: Our Leak Detector features patented Ion-Pump sensor technology, proven effective in detecting all refrigerant types. Patented automatic calibration design eliminates the need for manual balance or tick rate adjustments while the user selectable 10 sensitivity ranges enables the LS790B to detect all non-combustible CFC, HCFC, HFC gases and blends - PATENTED TECHNOLOGY CONTINUED: The patented water vapor filter provides greater stability under high humidity conditions and our patented automatic calibration circuit ensures optimal performance at all times - SUPERIOR DISPLAY: Over 100 computer generated tones and a high intensity bar graph display quickly alerts the user to varying halogen concentrations ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002NYBDM | | Alarm | Audible | | Best Sellers Rank | #1,580,051 in Automotive ( See Top 100 in Automotive ) #204 in Air Conditioning Leak Detection Tools | | Brand | BBK | | Built-In Media | Tool | | Color | Yellow | | Customer Reviews | 3.9 out of 5 stars 62 Reviews | | Global Trade Identification Number | 00750377777905 | | Item Type Name | CPS LS790B Leak-Seeker Refrigerant Leak Detector | | Item Weight | 3.2 ounces | | Manufacturer | CPS Products | | Manufacturer Warranty Description | 2 yr warranty on material and workmanship | | Mfr Part Number | LS-790B | | Model Number | LS790B | | Number of Items | 1 | | Power Source | Corded Electric | | Product Style | simple | | Sensor Type | Ion Pump | | Style | simple | | UPC | 750377777905 | ## Product Details - **Alarm:** Audible - **Brand:** BBK - **Color:** Yellow - **Global Trade Identification Number:** 00750377777905 - **Item Weight:** 3.2 ounces - **Manufacturer:** CPS Products - **Number of Items:** 1 - **Power Source:** Corded Electric - **Sensor Type:** Ion Pump - **Style:** simple ## Images ![CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display - Image 1](https://m.media-amazon.com/images/I/51xK7eQ2dTL.jpg) ![CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display - Image 2](https://m.media-amazon.com/images/I/41adU58REIL.jpg) ## Questions & Answers **Q: cant get the alarm to stop sounding any ideas hit the reset changed the batteries still ng ?** A: Check to see if there is water in the tip. If there is a lot of moisture or water in the actual sensor the alarm will go off non stop. **Q: does it detect 404a?** A: LS790B to detect all non-combustible CFC, HCFC, HFC, SF6 gases and blends. 404a is hp62, so if you go by item description from cps website the answer is no **Q: How accurate it finds leaks** A: I was able to find the small lea that was in the back of the blower unit in a matter of minutes. The AC repairman wanted $100 to take out his tester. I was able to quickly point the leak out to the repairman without paying for his time to troubleshoot. **Q: How accurate it finds leaks** A: My husband really likes this detector and says it is extremely accurate. He didn't like the detector, either, until he read the directions carefully. When working in a refrigerant saturated area (like inside a cooler where a unit has been leaking), the detector will "sound off" continuously. You must keep "clearing" the unit in order to "pinpoint" the leak and keep your "sensitivity" level about half-way. Also, the "tip" of the leak detector must be "clean" and on tight. If the "tip" is loose, the unit will continuously "sound off". This CPS detector replaced an older, popular brand name unit that cost 3x as much and he likes this one better. ## Customer Reviews ### ⭐⭐⭐⭐⭐ the detector works great. I had a town car with a leak ... *by J***R on September 15, 2015* ok. I read the manual quick and got an idea of how it works, then I started using it. I usually see how I am supposed to use it, then I start playing and make it work for me and how I'll use it. This is my recommendation. First, the detector works great. I had a town car with a leak that I couldn't find otherwise and knew it was time to get a detector. Let me begin by saying...if you are a mechanic, stop wasting your time and refrigerant. Get one of these. It will save you whatever it costs on the VERY FIRST repair. I found a leaky evaporator and a leaky low side valve within 10 minutes. Both were fixed...no more leaks. Holy cow I wish I would've bought this a while ago. Forget any other method. A small leak you will NEVER find without one of these. (Before I get into it, if the system has leaked out, you need to charge it because it reads the refrigerant, not just a leak. If that isn't implied you should understand that. You need to evacuate the system and put a charge to it. Vacuum pumps are cheap and you need to do it right anyway because you'll eat compressors if you don't get the air/condensation out. the oil that's used in the systems absorb that stuff and ruins it) Ok. Here's how I use it. I gauge the leak by first turning up the sensitivity to max and waving it around the engine bay. As others have said, if it's a bad leak, it will just constantly go off. That's ok. At least you'll know it's a large leak. I start max sensitivity and wave it around...no beeping. Good. Small leak. Then start working around all the components. If it's going off like crazy, back off the sensitivity. My leaks were really small, so I worked around with max and found them. Start at the obvious spots...around the compressor, condensor, where the lines connect to each other or other things, fill valves. It will most likely not have a random hole in the middle of a steel tube. It will be something that makes sense usually (leaking seals, valve, etc.). And that's my advice. Hope that helps someone out. I am an ASE master tech if anyone is wondering. ### ⭐⭐⭐⭐⭐ Great tool *by S***A on June 18, 2012* I am really impressed every time I buy something from CPS, they make real tools, that look real durable, with style and functionality. This detector has many useful functions, alarms and levels on sensibility that are a must for every AC tech. I hate cheap Chinese tools that in the end makes you look like a cheap technician, I love CPS products and I support things made in the US, I understand that companies have to cut costs and manufacturing overseas is a way to do it, but they are making customers pay for something less than they expect. ### ⭐ Thought the battery was maybe bad, so I changed out the battery *by T***Y on March 30, 2015* This thing is junk. After only 3 uses, it started to act up. Thought the battery was maybe bad, so I changed out the battery, and still it would malfunction. I emailed the seller, but they told me that it was passed 30 days since I purchased it. Which I understand, I don't blame the seller. They where kind enough to send me the manufactures info so that I may be able to warranty it through them. I don't like giving bad reviews, I have used this tool before when I used to work at other shops, and thought I was buying quality. But I guess this was not the case this time. ## Frequently Bought Together - CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display - Fieldpiece MG44 - Wireless Vacuum Gauge - Fieldpiece - DR82 Infrared Refrigerant Leak Detector - Ultra-Sensitive Leak Sniffer with Large, Backlite LCD Screen - Lightweight HVAC Tool --- ## 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.tw/products/766092-cps-ls790b-leak-seeker-electronic-leak-detector-with-0-25](https://www.desertcart.tw/products/766092-cps-ls790b-leak-seeker-electronic-leak-detector-with-0-25) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-11-03*