HAKINAKU 3-in-1 Plug-in CO Detector with 1000mAh Backup Battery | HD Screen & 85dB Alarm

Overview

Meet the HAKINAKU 3-in-1 Plug-in CO Detector, a compact environmental monitor that blends carbon monoxide detection with temperature and humidity sensing. With a 2-second refresh, it shows real-time data on a bright HD screen, helping you gauge room safety at a glance.

Designed for plug-in convenience, it fits standard US outlets (110–240V) and can be placed in bedrooms, living rooms, kitchens, hotel rooms, offices, or RVs. When power is interrupted, a built-in 1000 mAh rechargeable battery keeps the device operational for up to 90–96 hours, providing a cushion during outages and eliminating frequent battery changes.

Key sensor and alert features include a UL2034-compliant CO sensor, an audible 85 dB alarm, and a broad data range that covers CO from 0 to 999 ppm, a temperature span from 14°F to 122°F, and humidity from 0 to 95% RH. The combination of these sensors gives a clear view of environmental conditions and highlights potential hazards in real time.

What this can do for you: the device offers quick readings at a glance, clear alarms when readings diverge, and a portable option thanks to the onboard battery. It is a practical addition for homes that prioritize comfort, safety, and awareness of indoor conditions.

Key benefits

• Three-in-one sensing: CO, temperature, and humidity in one compact unit.
• Real-time updates every two seconds with an easy-to-read HD display.
• Plug-in design fits most US outlets for quick setup.
• Reliable audible alert at 85 dB to draw attention when needed.
• Built-in 1000 mAh battery delivers 90–96 hours of operation during outages.
• Wide monitoring ranges cover CO, temperature, and humidity for versatile environments.

Ideal use cases

• Home bedrooms, living rooms, and kitchens for ongoing environmental awareness.
• Hotels, travel accommodations, and RVs where power may be unstable.
• Offices and basements where a quick safety snapshot is helpful.