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Carbon Monoxide Detector Alarm, 2 Pack GLBSUNION Digital Display Carbon Monoxide CO Alarm Beeps Warning for Basement Travel Office Kitchen Bedroom House Living Room Hotel Garage, Comply with UL 2034

4.6 out of 5 stars 100 ratings

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  • ✅UNIQUE DESIGN —Product Dimensions: 4 * 4 * 1.5 inch, Portable and easy installation. Precise electro-optical sensor, high consistency and stability, move, or in the same place for that. Loud enough and sounds good. 【✅NOTE: IN NORMAL CONDITION, LCD IS NOT LIT FOR SAVING ENERGY (ENTER THE STANDBY STATE, AND STILL KEEP DETECTING/ALARMING). LCD WILL BE LIT TO DISPLAY THE ACTUAL CONCENTRATION AS CO LEVEL OVER 30PPM OR AS THE TEST/RESET BUTTON PRESSED】
  • ✅ALARM WARNING — When a Dangerous level of Carbon Monoxide is detected, the Red LED will flashes and a loud alarm pattern will sound, Loud 85 decibel Beep Warning alarm with LED Flash While in the Alarm Mode for the Life-Saving Safety
  • ✅SAFETY AND VISIBLE— Protect Our Family from CO, With 3 digits LCD Displayer is Optional, 'Err' indicates the unit malfunctioning. 'Lb' indicates it low battery & need to replace. '999ppm' indicates CO level over 999ppm. ‘actual concentration’ when less than 999ppm, ✅NOTE:LCD not lit when CO level less than 30 PPM.
  • ✅ENERGY-SAVING — Operated by 3 x 1.5V AA Batteries (not included), The alarm sound pattern is 4 beeps every 5seconds for the first 4 minutes. In 4 minutes, it will change to 4 beeps ever minute to save the battery
  • ✅ALARM STANDARD — 50ppm, alert within 60 to 90 minutes; 100ppm, alert within 10 to 40 minutes; 300ppm, alert within 3 minutes. Note: When you test the detector, please do not use gas blow the hole directly. What's in the Box: 2 x Alarms; 4 x Screws; 1 x User Manual

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Product description

CO detector meets all the requirements. Therefore, you can put your trust in it. It makes a loyal and reliable safeguard for your family.
✅Test the alarm First:
Step 1: press the test button for 5s (A single silence and test button eliminates confusion and allows you to silence and test the alarm easily)
Step 2: the unit will sound 4 beeps every 5s twice & Red LED flashes & LCD display "000" (3 min), that shows the unit in a normal situation.

✅Low Power warning:
Carbon Monoxide Alarm alerts you to dangerous carbon monoxide, even in the event of a power outage.
IF the alarm is low power, you can find the situation
Sound:"Chirp" every 30s
LED: Green LED flashes once every 30s & Red LED is flashes
LCD Display: "LB"

✅Malfunctioning warning:
IF the Carbon Monoxide Alarm does not work well, you can find the situation
Sound: "Chirp" every 30s
LED: Green LED is not flashes and Red LED is flashes
LCD Display: "Err"

This carbon monoxide detector features a digital display that shows the carbon monoxide level in the room, as well as the unit’s power level.
A:level over 999ppm:
Sound: 4 short alarm beeps
LED: Red LED is flashes
LCD Display: "999ppm"

B:30ppm< level< 999ppm
Sound: 4 short alarm beeps
LED: Red LED is flashes
LCD Display: "actual concentration"

✅Memory Mode:
If you leave home for long time, if the unit was alarm in this period, you just press the button for several seconds, the green light will flashes once every seconds ans the LCD will display the actual concentration.

1.Don't press test/reset button while installing batteries. Otherwise, the unit will not work.
2. The unit needs to be tested weekly. Verify the alarm and LED light operation by test the unit once a week.

✅What's in the Box

2 x Alarm
4 x Screws
1 x User Manual

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4.6 out of 5 stars
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5.0 out of 5 stars Useful Item
Reviewed in the United States on 16 August 2021
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1.0 out of 5 stars NOT DIGITAL
Reviewed in the United States on 27 May 2020
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5.0 out of 5 stars Easy to install
Reviewed in the United States on 19 March 2021
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J. D. Griffin
5.0 out of 5 stars Good.
Reviewed in the United States on 28 April 2020
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The Shopper
5.0 out of 5 stars It works!
Reviewed in the United States on 29 October 2020
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