allsun Pro Ultrasonic Leak Detector& Transmitter Automotive

This is quite a reliable leak detector that comes with a Leak detector; Ultrasonic probe; Ultrasonic microphone; Ultrasonic Transmitter; Extension tube; Probe tips,70mm and 290mm; Headphone with adjustable volume.

This is a pretty handy tool to locate and deal with leaks in various situations. It is indeed a lifesaver for some since it provides the ability to turn a professional task into a DIY job, at least to detect the source of the leak which saves a lot of time and helps identify the problem quickly.

Using the devices needs some getting used to, but the instructions are pretty clear for anyone to start using this immediately. The setup doesn’t take much time and is just a matter of couple of minutes where you attach components together.

Pretty efficient and reliable leak detector.

If you’ve ever had a small split in a hose on your car that you need to track down and replace, you will know that it can often be quite difficult to find which hose is causing the problem, which is where an Ultrasonic Leak Detector, such as this model from Allsun can help.

The EM2268 is basically a microphone that is tuned to pick up sounds with a frequency between 36kHz to 44kHz, which are often produced by air or gas escaping through cracks or holes, but is outside of the frequency range that humans can hear. The EM2268 then converts those frequencies into a sound that humans can hear — indicating that a leak has been detected.

It is also possible to pick up faulty electrical components, such as switches, transfomers and relays, as they also tend to produce an ultrasonic sound when going bad.

The set is made up of 2 main parts — a receiver (used to pick up sounds) and a transmitter, which you can place inside something that is supposed to be sealed (inside the cabin of your car for example).
The receiver is fairly compact and comfortable to hold with a screw in antennae connection on the end, which is used to attach the microphone or Ultrasonic Probes.
A simple rotary dial switch is located on the right hand side that turn the device on/off, but also adjusts the sensitivity.
On the front is a simple bar gauge which lights up as ultrasonic sounds are detected and shows you the intensity.
The EM2268 is powered via a 9v battery (not included), and is placed inside the battery compartment on the bottom and this has a 3.5mm headphone socket next to it, which is used to hear the sounds from the detector.

You get a small microphone to listen for sounds that simply screws onto the end of the receiver and there is a small tube which can be slipped over it to let you more accurately pin point where a leak may be.
You also receive an ultrasonic probe which can be screwed on, in place of the microphone and then there are 2 tips which can be fitted to the probe (a longer and a shorter one). These can be placed against pipes or valves etc, to help you to pick up any internal leaks.

A basic over ear style headset with an inline volume control is also provided in the kit to help reduce outside noises and let you hear the sounds generated by the receiver.

***** In The Box *****

1 x EM2268
1 x Transmitter
1 x Probe
2 x Probe Tips
1 x Microphone
1 x Extension Tube
1 x Storage Case
1 x User Guide

***** Installation / Usage *****
Using the device is actually pretty self-explanatory, but will take a little bit of getting used to what the sounds mean.

You effectively put batteries into the receiver, connect the headset and the microphone and then turn the rotary dial on. Now move the device around the area of any suspected leaks and the intensity indicator should light up when something is picked up and you will hear a change in the sound from the headphones. Using the probes is very similar, but you need to physically touch the probe against the suspected problem areas.

To test that sealed places, such as your car cabin are not leaking you can turn on the transmitter (9v battery not included) and place it inside the car. You can then move the receiver and microphone around the door and window seals — if the receiver picks up a transmission you likely have a leaky seal which can then be replaced.

***** Conclusion *****

There is no doubt that an Ultrasonic Leak detector can be a very useful addition to your tool box and save you time tracking down leaks, but it’s one of those things that the average person will not use very often.
This kit from Allsun, is quite comprehensive and seems pretty well made, although it doesn’t seem to have that rugged feel that you often get from professional products. Having said that, it does work and I’m sure the more time spent using it, the better you will be at interpreting the sounds that it picks up.

The included headset feels quite cheap, but it works, is very lightweight and is quite comfortable to wear, although it’s not the best at isolating background noises.
I like that the kit comes inside a handy storage bag to keep everything together and protected.

I was quite disappointed that 2 x 9v batteries were not included with the kit, especially when you consider the 150 asking price.

All in all, I’m quite pleased with the product, but I have seen several other kits that look almost identical for around a third of the price. Of course, I haven’t tried those other kits and they may not work as well as the Allsun, but I think I’d be inclined to give one of those a try first and save myself a heap of money — particularly for a tool that I wouldn’t be using very often.