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WJL-6000S is a corona HVAC leak detector with high sensitivity and visualized alarm display. Its adjustable sensitivity ensures automatic and optimal detection status， locating leaks much more accurately. It detects all halogen refrigerants including R134a, R410a, R12, R22, R600a, R404a, R1234yf.
Concentration Indicator
- Once leaking gas is detected, the beep frequency will increase. The more gas leaked, the quickly the buzzer beeps. The first indicator will flash quickly meantime and the other four LEDs will light up accordingly based on the concentration of leaked gases.
- The first indicator indicates both leak and battery level. Blinks in orange mean low battery.
Corona Sensor
It will respond to all halogenated. This includes, but is not limited to:
- CFCs e.g.R12, R11, R500, R503 etc.
- HCFCs e.g. R22, R123, R124,R502 etc.
- HFCs e.g. R134a, R404a, R410a, R1234yf etc.
- Blends such as AZ-50. HP62. MP39 etc.
7 Adjustable Sensitivity
- 1-7 Grade selectable sensitivity
- Maximum sensitivity is 0.21oz/yr
- smaller leak, higher sensitivity grade
- More refrigerants, more rapidly beeps, faster indicator flashes
- Note: 2 beeps per second when the detector is open, 10 beeps per second when leak is detected)
Audible and Visual Alerts
- LED light flash alarm
- Buzzer alarm
- Dual-battery indicators
Green - Suitable for job.
Orange- Need to replace batteries asap.
Flexible Probe
- Around 7.87-inch flexible probe
- Allows detection in difficult and hard-to-reach areas.
- Replaceable sensor tip, which makes the detection more accurate.
4AAA Batteries
- Battery life: about 50 hours
Leak Detector equips with:
- Portable black bag to carry and storage
- Note: batteries NOT included
Alkoby Family
2025-08-31 15:30:39
I've been struggling to find a tiny leak in my HVAC system. Dye (Twice) with leak sealer failed to seal the leak and it was nowhere to be found for over a month.I decided to take a chance and get this "sniffer" to help locate the leak.Reading the reviews i was a little worried since many people stated it does not work. but after careful research and understanding that the sniffing tip of the unit is ultra-sensitive, I ended up purchasing it anyways thinking i will be very gentle with it.The tool showed up the next day, I put batteries in the unit and activate it and it seemed to perform the initial startup properly. I went to the outside unit (which I already had completely open) and started moving the probe 1/2"-1" from any object but following the copper lines, i went near every soldering point and nothing... I thought for sure the unit is not working.I went back inside and took apart the air handler cover and started following the copper lines and in 5 seconds, the tested start beeping fast as I came close to one of the valves inside the air handler.I then turned the unit off and waited a few seconds to have the air remove any leftover halogen from the tip and started it up again and went in the direction of the same area and again it started beeping.I confirmed that the leak was there by spraying some water with dish soap in it to make bubbles and BINGO!I tightened up that nut and verified with bubbles AND the sniffer that the leak was gone.All in all, the unit performed perfectly when you use it gently and I performed the test multiple times after allowing it to sit unused for a few minutes between tests.
Mark R. Wietstock
2025-08-28 21:57:01
I ordered this product at the beginning of an auto AC DIY project that went on for months, and didn't get around to actually using it for awhile, but by the time I did, I found that it worked great, and was well worth the price I paid for it. Specifically, it helped me confirm that the valves on both high and low AC service ports were leaking, and that I needed to replace the cores in both valves. It subsequently helped me to confirm that my core replacements worked, and sealed the leaks I was previously detecting.Both the detection and sensitivity functions worked fine for me, and they should for you too, as long as you follow the instructions and don't expect this simple gizmo to perform like some kind of lab grade precision tool. When searching for leaks in unknown locations, the instructions suggest starting with the highest sensitivity level, then gradually decreasing it until you've pinpointed the exact location of the leak. I did the opposite, because I was testing for leakage from two known locations (AC service port valves) ... in other words, I started with the lowest sensitivity, put the tip as close to the valve opening as I could without touching it, and then worked my way up to gauge the severity of the leak.I got a few false alarms in ambient air at the highest sensitivity setting (knob turned until stopped), but wasn't upset about that. Just turned off to clear/reset the internal electronics, started the sequence again at a slightly lower sensitivity setting, and it worked fine. No false alarms when I backed the knob off a little from max rotation, which I see as "normal" for a simple device like this. For example, the control knob just isn't that sophisticated ... it's the same as a combination power/volume control dial on a radio, which probably gets pretty sketchy when it's controlling the "sensitivity" of something as delicate as an electronic gas detecting sensor.This is a BASIC refrigerant leak detector that worked as advertised for me, for a very reasonable cost. Very satisfied.
D. Miles
2025-08-18 18:28:27
So I thought the unit didn't work but it turned out I had 1 of the 4 batteries in backwards. My bad. Amazingly the unit still blinks the LED mostly green even with one of the batteries backwards, just doesn't detect refrigerant.With the batteries properly installed I can spray a small burst of HFC 152a into a cabinet and then the probe detects the refrigerant whenever it's brought near the cabinet. Though after about a minute the refrigerant has dissipated enough that it can no longer be detected (in a mostly closed cabinet) so the sensitivity may not be as high as advertised.original 1 star review *The unit doesn't wnework. The unit powers up properly with the green LED blinking. But there is no change when exposed to refrigerant, even spraying HFC 152a directly at the probe. Tested it outside with no refrigerant and also in the garage, spraying HFC 152a, at different sensitivity levels. Same blinking and beeping in all cases. Possibly it's just a bad unit. I may try another one and if that works I'll update this review.
Windsurf1
2025-08-07 18:20:54
Used this to detect a leak in auto system and it worked great! Could not find this small leak using dye, but with careful repeated use of this detector, it was clear and the part is on the way for repair. Very happy with this purchase.
56
2025-06-20 10:21:49
After reading reviews where people said it didn't work on obvious leaks (like open cans of refrigerant), I was hesitant to buy this. But I really needed to find a leak so I took the plunge. My issue is the exact opposite; no matter how low I dialed the setting, it triggered the alarm. It looked like every one of my fittings was leaking. I thought I had at least enough competency to get at least ONE of the fittings right so I immediately became suspect.I had the system evacuated and hooked up my air compressor to fill it full of air. Then got out a spray bottle with some water and dishwasher soap and started spraying fittings. After a few minutes, it was clear I had a leaking Schrader valve on the high pressure side as it was bubbling. So I replaced that and put it under vacuum a week ago; no leaks so far.I think this is a nice item and the price point can't be beat but it just didn't work for me.
Tomas Bernard
2025-05-29 13:00:25
Good
ABDUL REHAMAN
2025-05-15 14:05:52
Accurate work best quality
Jorge Belo
2025-05-09 21:22:28
Had a problem with the A/C diagnostic manifold I bought for my car and there was a leek due to the service hose becoming loose (poor quality diagnostic instrument).Tried it on setting 4; as I approached the tip to the manifold it started detecting at about 1" from the manifold's service port.
Murarn
2025-03-31 18:13:48
Jätte bra
Customer
2024-12-30 12:16:33
It works,It takes some time to figure how the gasses disperse and concentrate based on dynamics forces impacting flow and sensitivity but at the end you get the feeling where is the source.Combined with oil leak that normally follows the gas leak it solidifies the finding.And works even on "primates generated gasses :-D".Good BFTB.
Claes P.
2024-12-08 13:18:56
FUNGERAR INTE
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