Hembisen 5-in-1 CO & Explosive Gas Detector – AC Plug, Digital Display, 3-Level Alarm, Battery Backup (3-Pack)

Comprehensive safety with a single, versatile detector

The Hembisen 5-in-1 detector blends carbon monoxide monitoring with explosive gas detection in a single, easy-to-plug unit. Its backup 9V power design helps maintain continuous sensing during power interruptions, although the 9V battery is not included. This 3-pack option provides flexible coverage for multiple spaces, so you can monitor essential areas without clutter.

Key specifications at a glance

• CO detection range from 0 to 2000 ppm and explosive gas detection from 0 to 10% LEL for a broad sensing window.
• Real-time environmental readings include temperature from 1 to 176 °F and humidity from 0 to 99% for contextual awareness.
• Audible and visual alerts with an 85 dB alarm and a bright display, both adjustable to fit your space.
• AC plug-in design suitable for homes, RVs, hotels, and apartments, with a practical backup power feature.

Real-life use cases

• Place in the living room, kitchen, and bedroom to monitor air quality at home and in temporary spaces.
• Use in RVs or hotel rooms for a quick, at-a-glance readout of CO and gas levels during travel.
• Keep in hallways or near appliances to help you gauge environmental context when alarms trigger.

How it helps you stay informed

The device provides real-time readings on a clear display, with a configurable alarm and brightness. The 3-level settings allow you to tailor volume and visibility to your room, reducing false alarms while remaining alert to potential hazards.

Why a 3-pack makes sense

With three detectors, you can cover more spaces—home, RV, hotel, or apartment—without compromising on monitoring coverage. The compact plug-in design means you can place units where they are most effective and still maintain a clean setup.