What is Pocket CO?

Pocket CO, designed by KWJ Engineering Inc, is the world’s smallest renewable Carbon Monoxide detector. Its advanced technology, tiny size, and ease of use, make it perfectly suited for many applications and activities where CO should be monitored.
In addition to keeping users safe from immediately dangerous levels of CO, Pocket CO also allows monitoring of low CO levels, and collects dosimetry information, such as maximum and average readings. For full specifications, download the Data Sheet.
Who can benefit from Pocket CO?
Though commonly thought to be a problem just in the home, Carbon Monoxide affects individuals in many areas. See the list and links below to see those who are at risk:
Pocket CO News:
- June 2008: NYC Buildings Dept. orders 100 Pocket CO Model 300’s.
- July 2007: NYC Buildings Dept. orders 100 Pocket CO Model 200’s.
- July 2007: The new film Toxic Free Airlines partners with Pocket CO to protect health.

- March 2007:
Pocket CO’s creator, Tranducer Technology Inc, <a
href=”http://www.transducertech.com/media/TTIKWJPocketCO.pdf”>merges
with KWJ Engineering
Inc.
- December 2006: Pocket CO Model 200
introduced.
Downloads



- Save a life
- Low Cost+High Performance=Best Value
- Save money on building/home/appliance inspections
- Ease of use
- Alarms when dangerous levels of CO detected
- Easy-to-read display shows low CO levels in
1 ppm increments, up to 500ppm
- Loud alarm, backlight display, vibrator, and bright red light
- Simple, one button operation
- Portable protection for recreation, job, or travel
- Very light, fits on a keychain
- Reports average exposure, total exposure, maximum exposure, and time of maximum
- 1 year instrument warranty & replaceable battery

We are a volunteer first aid squad and like to keep the Pocket CO clipped to our blood pressure case. This way, every time that we enter a home or business to treat a patient, we run a quick test to assure that we are safe.
Anthony J. Pellegrino, Captain, Shrewsbury First Aid Squad, NewJersey
Last Wednesday I took off from Langley BC to Powell River and back to Langley in a Piper Cherokee for a dual cross country ride; this is a bit over two hours flight, and most of the way is along the Pacific coast. After I started the engine we heard some sort of beep in the cabin, so we looked at the instruments, checked cell phones, our headsets, everything seemed OK, plus none of us heard that kind of beep in a Cherokee before. It took us about a half hour of flight to figure out that the Pocket CO was beeping (was the first time using it, completely forgot I had it until my flight instructor asked me to check that “thing” hanging around my neck). When I read it, it showed 63ppm; so we closed the heaters, and opened all vents, until the reading dropped to 3ppm, that is a more “normal” figure. By now we were well above Vancouver, but because of the low reading we decided to keep going and not go back to Langley. Apparently the CO peaked to 90ppm (if I read the 12hrs log correctly), that was probably during our climb when we used full power. My flight instructor wanted to ground the airplane, but the end result was the school installed a new chemical indicator! The mechanics got a bit touchy, because the airplane just got back from a 100hrs check, they said there was no way we had any CO in the cabin, but I’ve seen the numbers, and I don’t really care what they say: I fly the airplane.
I knew this little device could save my skin one day, I didn’t expect it so soon! I had a few more flights since then, with different airplanes, all show a very low CO number.
Ion, Canada, May 2010
Just wanted to let you know that I am one of your success stories. I purchased a Pocket CO monitor for use in my research. It came in handy one day when a new CO alarm in my home started to go off. Using the Pocket CO, I was able to determine that the CO alarm wasn’t faulty–we had CO in the house! We traced the source to a vent pipe that was never married to our hot water heater. I’m a big fan of your product which is inexpensive, portable, and very easy to use. It’s a great addition to home CO alarms, and I always take mine with me when I travel. Thanks!!
Eric L., Emergency Physician/Medical Toxicologist, Colorado, January 2010
I just bought the Pocket CO detector a few weeks ago for my airplane. While flying I noticed it get up to over 100 ppm. So, today I closely inspected the exhaust manifolds and found a hidden hole in the exhaust stack. I never would have known about it if I hadn’t bought Pocket CO! Thanks!
Doug M., Southern California, December 2009