iToolMax 4-in-1 Portable Gas Detector monitors CO, CO2, temperature and humidity, with an instant 85dB alarm and red warning light. Ideal for homes, RVs and workshops.

✅ 4-in-1 Air Safety Monitoring for CO, CO₂, Temperature & Humidity
✅ Dual Audible & Visual Alerts with an 85dB Alarm and Flashing Red Light
✅ Built-In Flashlight & Flexible Placement—Hang, Mount, or Place
✅ Up to 340 Hours Runtime
✅ Ideal for Homes, RVs, Workshops & Camping