Portable Carbon Monoxide Gas Detector - Lunarlipes Handheld CO Meter

william ahalt: Works great

United States on Dec 17, 2023

Steve: I liked the size and basic design of the unit. Backlit display was easy to read.

The problem I had is that most of the time, the reading was 0 ppm. This is my first CO meter, but I was having trouble believing the zero number, especially when in the vicinity of flame sources such as burning candles. To get substantial CO readings, I had to fire up my charcoal grill. I also found running a gasoline engine in an enclosed space would get a reading.

The readings at the low end of the range seemed to be erratic and/or non-linear. I might see a reading of 10, which would drop to 0 a second later, and then back to 10 after another second. I understand the sensor has a slow response time, but I would have expected more gradual changes in the readings.

The sensor supposedly has a 3-year lifetime. I would not buy this unit next time.

United States on Apr 04, 2023

CRAIG A. BUHR: Have had several typical CO alarm monitors in the home; but always wonder how well they are working. With the house buttoned up for winter and several potential sources for CO, I wanted to have another more reliable device that would provide a specific sensor value for potential CO conditions. It is easy to use and easy to read. After purchase and prior to receiving, the seller provided a friendly communication via email and included another fresh PDF copy of the owner's manual for the device. Delivery was quick, and as noted from the initial postings. I'm currently in the process of checking different sources in the home at different times of use along with the attached garage to confirm sensitivity of the device and reliability of those standard CO alarms for validity. So far so good.

United States on Mar 01, 2023

AmazoneerAmazoneer: Overall, I'm impressed with the quality of this $40 carbon monoxide meter. Well worth the expenditure to check for appliance leaks in the house, as well as the cabin of my vehicles.

The instructions are not clear on the calibration time, as many questioners noted. When first turned on, the digital screen will display "120", and begin to count down each second, until 2 minutes later, the display will automatically change to the sampling mode. The 120 second calibration mode can be interrupted at any time by pressing the “ON” button, and will revert to the sampling mode. The instruction sheet lists a 60 second response time; the data sheet for the Nemoto NAP-505 sensor lists a 30 second response time. The response time varies with temperature, and increases with colder temperatures. Your choice if you want to wait the full 2 minutes.

The instructions indicate a typical sensor life of 3 years, while the data sheet for the NAP-505 sensor lists an expected life of 7 years. The electrolyte used in the sensor is hygroscopic, and will attract water will degrade the device. Store the CO meter in a low humidity environment, to achieve the expected...

United States on Jan 15, 2023

VMGP: Had an ongoing CO problem in my 2-family brownstone. Both the FDNY and the gas company (National Grid) were in my house and my neighbor's houses multiple times trying to find the source. Finally found it, but throughout the month-long process this device was an absolute god-send.

It was accurate, lasted for days on a single set of 3 AAAs, provided almost the exact same readings as the super-expensive high-tech scanners from FDNY and National Grid, and was instrumental in eventually resolving the problem (which was in a neighbor's house).

I rarely write reviews but had to for this product, top notch, top quality, and excellent value, cannot recommend enough.

United States on Jan 02, 2023