🔍 Coreel Portable 4-Gas Detector: Sound Light Vibration Multi-Gas Monitor Meter with Rechargeable LCD Screen Backlight - Ready to Use… Review

I needed to adjust my settings to match my company's settings. The battery life isn't great, but it's easy to charge. I use it as a backup and it works great!

I work in an oil field and this monitor ticks all the boxes for safety. It's a bit bulky and doesn't hold a charge very long, but for the price, it's perfect.

A very good instrument in a very nice case. The orange color is great! I just received it, so I'll write about the accuracy and reliability later. The price makes replacing the sensor obsolete, you can just buy a new one.

20.3% O2 saturation returned from box, outdoors with a breeze. Fresh air 20.8 - 20.9 depending on humidity. The photo is shown next to an oxygen-only device calibrated in the USA. DO NOT BUY.

Great product for the price, got it the next day and it worked great. Only problem is don't use it in the rain if you expect the CO2 readings to go crazy and the screen to fog up. I would buy again.

Battery doesn't last long. You can't leave it on at night to monitor the room, in the morning it's dead. Also don't leave it on while charging. works well for daily work, just remember to charge.

Works great right out of the box. Delivered in a beautiful case. it speaks to you We bought it to test the air quality in our newly built chicken coop. The building is densely built to save energy. It can definitely save a life.

The battery lasts an average workday and charges quickly. Captures changes in real-time and with decent accuracy for its price. As a last resort and on a budget, it works to monitor oxygen levels in unconventional locations. Like many other carbon monoxide detectors, it gives a carbon monoxide warning when hydrogen is present.