Portable Carbon Monoxide Detector for Travel, 3-in-1 Rechargeable CO Detector with Alarm, 300H Standby, Temp & Humidity Monitor, Magnetic Back, Custom Alarm Thresholds for RV, Car, Camping, Hotel

Large Capacity & Extended Runtime Powered by a built-in 2000mAh rechargeable battery, this carbon monoxide detector offers exceptional endurance. On a full charge, it provides up to 10-12 days (approximately 300 hours) of continuous monitoring, freeing you from frequent recharging. It charges quickly via a standard USB Type-C cable (5V/1A input) in just 34 hours. Note: To conserve power, the display will automatically turn off after 1 minute of inactivity. The sensor, however, remains fully active 24/7, ensuring uninterrupted protection
3-in-1 Smart Co DetectionThis upgraded portable carbon monoxide detector delivers real-time, accurate monitoring of three key metrics: carbon monoxide (01000 PPM), temperature (-10°C~50°C / 14°F~122°F), and humidity (0100% RH). Equipped with a large HD display, it lets you check the air safety status at a glance. Plus, a built-in flashlight function is included for emergency lightingperfect for home, hotel stays, or camping trips

How long does the battery last? Why does the screen turn off after a short while?
Up to 300 hours battery life, USB-C rechargeable (power bank/wall adapter compatible) – ideal for portable CO detector travel. Screen off in standby to save power, continuous monitoring active; no need to worry, it’s not out of battery!
Does it show temperature in Fahrenheit and Celsius?
Yes! It displays temps from -10°C(14°F) to 50°C(122°F), with one-click switching between °C and °F—perfect for travelers.
Can I use it as an rv carbon monoxide detector?
Yes! With a UL-compliant sensor and rechargeable battery, it’s a dependable CO detector ideal for RV use, camping and all your road trips.
Does it detect other harmful gases?
No, the Hymeter Portable Carbon Monoxide Detector detects only carbon monoxide (CO). It monitors CO levels from 0–1000 PPM, but does not detect other harmful gases such as methane, propane, or natural gas leaks.

How long does the battery last? Why does the screen turn off after a short while?
Up to 300 hours battery life, USB-C rechargeable (power bank/wall adapter compatible) – ideal for portable CO detector travel. Screen off in standby to save power, continuous monitoring active; no need to worry, it’s not out of battery!
Does it show temperature in Fahrenheit and Celsius?
Yes! It displays temps from -10°C(14°F) to 50°C(122°F), with one-click switching between °C and °F—perfect for travelers.
Can I use it as an rv carbon monoxide detector?
Yes! With a UL-compliant sensor and rechargeable battery, it’s a dependable CO detector ideal for RV use, camping and all your road trips.
Does it detect other harmful gases?
No, the Hymeter Portable Carbon Monoxide Detector detects only carbon monoxide (CO). It monitors CO levels from 0–1000 PPM, but does not detect other harmful gases such as methane, propane, or natural gas leaks.

Learn more about the Detailed Specifications