NULETO 4-in-1 CO & Gas Detector – Plug-In with Temp & Humidity, UL Certified

All-in-One Monitoring for Safer Spaces

The NULETO 4-in-1 CO and Gas Detector is designed to deliver real-time insight into the air you share with family, guests, and pets. This plug-in device combines multiple sensing capabilities into a single, easy-to-place unit, making it a versatile safety companion for home, hotel rooms, and RV trips.

Rather than juggling several devices, you get a consolidated view of air quality, helping you notice changes sooner and respond with clarity. The result is a practical tool that fits into daily routines without adding clutter.

What it measures

• Combination gas: 0 to 15% LEL
• Carbon monoxide: 0 to 999 ppm
• Temperature: 32 to 212 F
• Humidity: 0% to 95% RH

Clear, real-time information

A backlit LCD keeps you informed with live readings for CO, combustible gases, temperature, and humidity. When readings indicate a potential issue, an 85 dB alarm provides audible notification to everyone in the space.

Safe and reliable

UL 2034 and UL 1484 tested, this 4-in-1 detector responds to elevated gas levels with prompt alerts. CO readings at various ppm thresholds can trigger alerts over different timeframes, helping you assess urgency and act accordingly.

Plug-and-play convenience

Simply plug into any standard 110V-220V outlet. The unit preheats for about 200 seconds and begins monitoring automatically. An auto-dimming backlight reduces energy use when ambient light is low.

Versatile and travel-friendly

Compact and easy to deploy in homes, hotels, or RVs, this detector provides round-the-clock awareness without requiring special setup or tools.

Usage tips

• Position away from direct vents or cooking zones to minimize false readings.
• Test regularly and follow manufacturer guidance for maintenance and replacement.

Note: This device supports air monitoring as part of a broader safety routine. It is not a substitute for professional safety equipment or maintenance plans.