---
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: "RM2197"
currency: MYR
in_stock: true
reviews_count: 8
category: "Bbk"
url: https://www.desertcart.com.my/products/766092-cps-ls790b-leak-seeker-electronic-leak-detector-with-0-25
store_origin: MY
region: Malaysia
---

# 0.25 oz/yr ultra-sensitive detection high-intensity bar graph for instant readout flexible probe for hard-to-reach leaks CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display

**Brand:** bbk
**Price:** RM2197
**Availability:** ✅ In Stock

## Summary

> 🚨 Catch leaks before they catch you—precision detection that works as hard as you do!

## 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?** RM2197 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/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

- • **Flexible Probe Access:** Easily navigate tight engine bays and complex HVAC systems with the versatile flex probe.
- • **Mechanic-Approved Efficiency:** Trusted by ASE master techs to find elusive leaks fast—cut repair time and boost your professional credibility.
- • **Smart Patented Ion-Pump Sensor:** Automatically calibrates and filters humidity for consistent, reliable detection across all common refrigerants.
- • **Intuitive Visual & Audible Alerts:** Over 100 computer-generated tones paired with a bright bar graph display ensure you never miss a leak.
- • **Pinpoint Precision Leak Detection:** Detects refrigerant leaks as small as 0.25 oz/year, saving costly refrigerant loss and downtime.

## Overview

The CPS LS790B Leak-Seeker is a professional-grade electronic refrigerant leak detector featuring patented Ion-Pump sensor technology with automatic calibration and a patented water vapor filter. It offers ultra-sensitive detection down to 0.25 oz/year, a flexible probe for hard-to-reach areas, and a high-intensity bar graph display with over 100 alert tones. Ideal for HVAC and automotive professionals seeking fast, reliable leak detection across multiple refrigerant types (excluding R410A).

## 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 ✓ 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: THIS MODEL DOES NOT WORK WITH R410A - I've tried to work this out with CPS, but they clearly don't stand behind their products. This model, the LS790B has performed remarkably well for the few we used on our production lines over the last decade since R410A was implemented, but their latest designs DO NOT WORK WITH R490A. Do not buy this model if you intent on using it for R410A.

## 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 |
|---------------|-------|
| Alarm | Audible |
| Brand | BBK |
| Color | Yellow |
| Item Weight | 0.2 Pounds |
| Power Source | Corded Electric |
| Style | simple |

## Product Details

- **Brand:** BBK
- **Style:** simple
- **Power Source:** Corded Electric
- **Color:** Yellow
- **Item Weight:** 3.2 ounces
- **Alarm:** Audible
- **Sensor Type:** Ion Pump
- **Global Trade Identification Number:** 00750377777905
- **Number of Items:** 1
- **Manufacturer:** CPS Products

## 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)

## 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.

### ⭐ THIS MODEL DOES NOT WORK WITH R410A
*by L***. on January 6, 2017*

I've tried to work this out with CPS, but they clearly don't stand behind their products. This model, the LS790B has performed remarkably well for the few we used on our production lines over the last decade since R410A was implemented, but their latest designs DO NOT WORK WITH R490A. Do not buy this model if you intent on using it for R410A.

### ⭐⭐⭐⭐⭐ Great Tool
*by I***M on June 27, 2012*

Not only is this tool USA made, it is of very high quality. I used this same unit at the dealership for vehicle A/C work and it performed flawlessly. Easy to use, compact, detects ALL refrigerant types. This is definitely a professional tool, and a great value.

## Frequently Bought Together

- CPS LS790B Leak-Seeker - Electronic Leak Detector with 0.25 oz/yr Sensitivity, Flex Probe, and High-Intensity Bar Graph Display
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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-03-05*