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Compact & Powerful Safety: JNHCD Smoke + CO Detector
- Loud 85dB Alarm Instant alerts for smoke or dangerous CO levels
- Easy Battery Setup-Runs on 3x AA batteries (included) with low-power alerts
Common CO Sources at Home
- Gas appliances (dryers, water heaters, furnaces)
- Fireplaces & stoves (gas/wood)
- Grills, generators & vehicles
Sound + Light Alerts
- Loud 85dB alarm & flashing lights instantly warn of smoke or CO danger—keeping your family protected.
Ideal Installation Locations
- Install in bedrooms, hallways, basements, living rooms or vehicles – anywhere people spend extended time.
Smart LCD Alert System
- Real-time CO/smoke level display
- 85dB siren wakes deep sleepers
- 1-button mute & self-test
- 1-Minute Alarm Install 1. Twist off base; 2. Mark/drill holes; 3. Screw on bracket; 4. Click alarm in place
- Tip: Test alarm after installation
Ronald Bianchi
Reviewed in the United States on March 4, 2025
I have all hardwired detectors in my house. Over the past 3 months, 3 of them starting chirping. Changed the battery and still chirped and went off. Looked on line and saw that I replaced one 3 years ago at $29, now they are $79 for 1. Looked into these and ordered them and so far so good. I mounted 2 to the ceiling next to the others and one on the wall using a thin command strip and it worked perfect.I will order 3 more and for the price, you can't beat them.
Scott Sherwood
Reviewed in the United States on February 24, 2025
Easy too install came we with 3 AAA batteries, decent alarm
Payton
Reviewed in the United States on February 19, 2025
Amazing for the price! Easy set up! Sound level, accuracy and battery life are everything you need! The quality of them are even amazing!
Airman
Reviewed in the United States on February 19, 2025
Easy to install. These detectors are for CO2 and smoke.
Gary Robertson
Reviewed in the United States on January 20, 2025
I have two of these. They are identical. One keeps going off and displays 35 ppm CO the other says 0 ppm. Which one is right. Come to find out a vent pipe from my furnace failed. To err on the side of caution I believed the first one. There is no manufacturer listed or number to call. If i only had one of this my wife and my self would probably be DEAD.. There is no manufacturer warrantee or customer service numbers to call. Impossible to find any information about JNHCD again avoid this product.. DONT GET DEAD
Missy
Reviewed in the United States on December 22, 2024
We live in an older home that don't have smoke detectors or anything else. These are super easy to install and mount. Works great. They are easy to change batteries on . And I love that they have smoke and carbon monoxide detectors in the design . Great value for your money .
Maria
Reviewed in the United States on December 20, 2024
I love that this is both carbon monoxide and smoke detector. Love the digital look. And it came with batteries!!! Basic installation, fit on the screws from my last smoke detector.
Charles Jackson
Reviewed in the United States on December 2, 2024
Nice looking great value. They are loud enough to hear upstairs battery life is around 2 to 3 years with decent batteries. 3 in this box very good quality and about the same size as a regular smoke detector.
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