TopTes CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange

I picked up the TopTes CT-300 Portable Carbon Monoxide Detector as a simple safety tool, and it turned out to be one of the most important purchases I’ve made. This unit alerted us to a serious issue with our apartment’s gas heater, it wasn’t igniting properly and was releasing gas into the space. Without this detector, we likely wouldn’t have noticed anything was wrong until it became a real emergency. What really stands out is how responsive and accurate it feels. It provides real-time readings with clear numerical values, so you’re not just relying on a basic alarm, you can actually see changes in air quality as they happen. In our case, the readings made it obvious something was off almost immediately. The alarm system is very effective. It’s both audible and visual, the alarm is loud enough to get your attention, and the screen changes color as levels rise, so you can quickly gauge how serious the situation is. The display is backlit and easy to read at a glance, even in lower light. Functionality is straightforward and practical. It powers on quickly, starts measuring right away, and is portable enough to move from room to room or even use in a car or while traveling. It works well as a supplemental safety device or for spot-checking specific areas. Battery life has been solid for a portable unit, and it runs on standard AAA batteries, which are easy to replace. There’s also a low battery indicator so you’re not caught off guard. Overall, this isn’t just a gadget, it’s a genuinely useful safety device. In our case, it very likely prevented a dangerous situation from getting worse. Highly recommended for anyone with gas appliances or heaters. It’s a small investment that can make a critical difference.

Excellent device. Very useful for maintenance techs and anyone working in confined spaces where carbon monoxide can be a concern. Accurate readings with clear audible and visual alarms. Compact, easy to carry, and simple to use. Also, a great safety tool for RV or camper owners who have a gas cooktop inside. Highly recommended.

Give it five stars because when it worked it worked great! It was accurate, battery lasted a long time, co detection was good but it unfortunately failed on me.

Just received this and tested it out today. Went thru the simple calibration/set-up and tested it using our gas stove as the source of CO. Worked as described. Have to believe what they state are the specifications and sensitivity since I have no other measurment method to compare against. While the stove burner was lit, I got very low readings of about 2ppm (nice blue flame). When I turned the burner off, (no flame) there was still gas coming from the burner for a split second and the meter reading briefly jumped to 75ppm+. So it works - accuracy seems reasonable.

I purchased this as a method to pinpoint CO leaks as needed in an RV. The unit works well and I have tested it in an environment with CO and it worked perfectly. Once exposed to CO it takes a few seconds to register. I specifically wanted something with standard batteries because my luck is when I need it rechargeable batteries are dead. This way I can quickly replace them. I read other reviews saying that it didn’t detect CO2 which it isn’t supposed to it detects CO (carbon monoxide) and it performs well. The unit is easily stored and portable. For the price point it is a great value.

Works perfectly 👌

I used this to determine that my oil burning furnace had no carbon monoxide exhaust leaks in the house. To verify that it was indeed working I turned it on and walked to my running car and as I approached the car the tester alarm went off and continued to increase as I got to the back of the car. It seems to only test CO and levels of CO. I was able to Check the entire house fully.

I bought this unit because of the great features - Detection of CO, LCD display with multi-color detection alarm, LEL% and compact size. First the good part - Unit is of very good quality and extremely easy to use. However truly disappointed in the sensor capabilities. The sensor is not reliable. I got faulty readings of CO in open areas and the worst part is when you blow on the sensor, it threw a CO alert alarm, so basically I had CO being emitted from my breath which is absurd! I tested this on a car exhaust and the readings were erratic, out of three tests the sensor only detect CO coming out of the car exhaust once. I don't know if I got a bad piece which had a sensor defect however based on what I saw with this item, I will not recommend it.

Keeps you safe from Co!

Cumple las expectativas

👍

It dit not detected the proper value compare to a calibrated meter.

日本語の説明もあり分かりやすかったです。測る数値が他社よりも範囲があるのでグッド。商品もしっかりしています。 試しに石油ファンヒーターで試したら直ぐに反応しました。素晴らしい商品です。