Carbon Monoxide Detector Plug in with Temperature & Humidity, 3-in-1 Portable CO Detector for Travel, Hotel, Home and RV Safety, Carbon Monoxide Alarm with Real-Time CO Monitor Display

Price: $26.99
(as of Jan 01, 2026 14:49:09 UTC – Details)

Product description

1, How to Use-Quick Start With The Carbon Monoxide Detector YC302 Pro

1). After connecting AC power supply. The alarm will have beep for one time, and the LED display will show four “eights” for 3 seconds.

2). Wait 30 seconds countdown for sensor preheating, during theprocess, green light will be steady on, red and yellow lights will flash.

3). Do not apply carbon monoxide gas (hereinafter referred to as “CO”) to test during the warm-up process because the carbon monoxide gas will not be detected during the process.

4). Once warm up process finished, the detector is ready for carbon monoxide monitoring.

5). There are different outputs depend on gas concentration: whencarbon monoxide concentration>150ppm, sound and light alarm will be

2, How To Use Test Functionality

Method 1: Press the Test button. If the alarm sounds, it confirms the device is functioning correctly.

Method 2: To test with actual gas, release the gas through the bottom vent. As the gas rises and reaches the sensor, the alarm will activate.

5, What to Do in Case of Alarm

Your body will recover fast as long as you get enough fresh air after CO exposure.It’s not irreversible damage. So what we need to do are below after exposure:

The CO alarm can only warn the presence of CO. It can’t prevent CO from occurring, nor can it solve an existing CO problem. If you have been exposed to carbon monoxide, you should follow the emergency steps listed below:

1). Open doors and windows in the location to allow fresh air to enter the space and carbon monoxide to escape.

2). Go outdoors and get fresh air as quickly as possible to release thechemicals from your body.

3). Call 911 for emergency medical treatment.

4). Evacuate the location that you believe is the source of the carbon monoxide exposure.

5). Have a licensed professional examine the area you suspect is releas-ing carbon monoxide and make any necessary repairs.

Note: Never restart the source of a CO problem until it has been corrected. Never ignore the sound of the alarm.

6, Technical Specifications

Model YC302 Pro Product Standards CSA 6.19 Operating Voltage 110~230V 50/60Hz Power Consumption < 4W Sensor Electrochemical sensor Warm-up Time 150 seconds (regular) Alarm Sound Level 85 dB at 1m Visual Warning Green-System is on Yellow – Fault, sensor has lost efficacy Red – Alarm, there is a gas leakage Detected Gases Carbon Monoxide Operating Temperature 32 to 100°F(0 to 38°C) Relative Humidity ≤ 95% to avoid condensation Size 3.7”x3.7″x1.26″(94mm x94mm x 31mm)

Does this carbon monoxide alarm detector also smoker and natural gas?

It detects carbon monoxide (CO) only.

How is the quality of this device?

It’s elegant designed and made of fire-resistant materials, it’s certificated with UL2034. It’s a good choice for the USA market.

Why plug in? Battery operated and AC plug in operated, which is better?

Carbon monoxide detector work in room only, plug in can always work, no need to worry about low battery, no worry about the bad design of battery cover.

Is it difficult to use this carbon monoxide detector YC302 Pro?

It’s very easy, plug in and it works.

How to do when we have questions in using the CO alarm?

We will answer in 24 horus, please feel free to ask any questions about it.

【3-in-1 Real-Time Monitoring (CO + Temperature + Humidity】Built with a high-precision electrochemical sensor, this carbon monoxide detector delivers accurate CO readings from 0–1000 ppm. The large LCD shows CO levels, temperature, and humidity, giving you full indoor awareness. Functions as both a CO detector and CO monitor for reliable home safety.
【Plug-In Safety for Home, Hotel & RV】Simply plug into any 120V–240V AC outlet for continuous operation. Ideal as carbon monoxide detectors plug in for bedrooms, kitchens, hallways, apartments, and RV use. No batteries required. The compact foldable-plug design makes it perfect for hotel stays, rentals, and travel.
【Portable CO Protection for Hotels & Airbnb】Lightweight and compact, this portable carbon monoxide detector is easy to pack for any trip. Use it as a travel carbon monoxide detector in hotels, cabins, rentals, trailers, or RVs to ensure safety in unfamiliar environments. A must-have for travelers, families, and renters.
【Large LCD Display & 85 dB CO Alarm】The clear, bright LCD screen displays real-time CO concentration, temperature, and humidity at a glance. When dangerous CO levels are detected, the built-in ≥85 dB carbon monoxide alarm instantly alerts you—ideal for emergencies at home or while traveling.
【Multi-Scene CO Protection: Home, Travel & RV】Provides reliable monitoring wherever you need it: homes, RVs, apartments, rentals, cabins, dorms, and offices. Designed for both carbon monoxide detectors portable and plug-in use, offering flexible protection across multiple environments.