Meross Carbon Monoxide Detector/Alarm, LCD Digital Display CO Alarm with 2 AA Batteries(Include) and Silence Function, 7-Year Fire Safety for House, Bedroom, Hotel

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About this item

  • 【QUICK INSTALLATION】Carbon Monoxide alarm can be wall mounted or free standing – ideal for taking on holiday or when travelling. When the harmful gas precise electrochemical CO sensor, it shows high consistency and stability. The Test / Silence button on digital CO alarm can help you use the alarm better.
  • 【EASY USE & LOUD ALARM】The digital CO sensor can clearly inform you of the working status of the alarm through the different colors of the LED indicator (green LED indicates normal operation, red LED indicates alarm status, and yellow LED indicates failure)
  • 【LCD DIGITAL DISPLAY & HIGH SENSITIVITY】Clearly displays the battery life and the real-time harmful gas – CO levels taken from the surrounding; The CO detector can respond to various CO threshold levels, with the detecting level range: 20-999PPM. CO detector loud 85 dB alarm at 3 feet to ensure the safety of you and family.
  • 【ENNERGY SAVING】CO detector is operated by 2 * 1.5V AA alkaline batteries for 3-year battery life at normal operation. Alkaline batteries are safer than lithium batteries. The battery in carbon monoxide detector needs to be replaced.
  • 【LONG LIFESPAN & EN50291 QUALITY】7-Year lifespan of carbon monoxide sensor and 36 months worry-free product guarantee ensures your long-term purchase. Reassuring product quality and EN50291 for your peace of mind.
Weight: 150 g
Dimensions: 12 x 8 x 4 cm; 150 Grams
Model: GS828
Part: GS828
Pack Quantity: 1
Batteries Required: Yes
Batteries Included: Alkaline
Manufacture: meross
Quantity: 1

Product Description

CO alarm




3-Year Battery Life

  • This battery icon indicates that the battery is fully charged and does not need to be replaced.
  • We recommend using LR6 AA batteries (Raymax brand)

Energy Saving

  • Every 33 seconds, signal lights flash green means CO alarm is in monitoring.
  • When the test button is pressed, screen will light up again and display the real-time CO concentration
  • (No reading on LED screen for energy- saving)

Clear LED Reminder

  • LOW BATTERY: yellow lights flash. You need replace the battery.
  • FULL BATTERY: green lights flash. The home CO detector is working.
  • ALARM TRIGGERED: red lights flash. Max alarm reaches 85dB.

Mute the alarm by press the SILENCE button.

Easy-to-Read LCD

Intelligent Chipset

test/silence button

Easy-to-Read LCD

  • In order to extend the battery life, the LED will not display the reading when the product is working normally.
  • When you want to detect the real-time carbon monoxide concentration, you need to press and hold the test button. The LED screen will show the result

Intelligent Chipset

  • Integrated with the latest electrochemical sensors and an intelligent chipset, this alarm can quickly and accurately detect dangerous smoke levels and potential CO leaks


  • A TEST/SILENCE button allows you to test the alarm to ensure everything is functioning properly, and to silence a false alarm with a simple push

Installation & Testing Method





Locate it at a minimum of 1.8m (70 in.) above the floor level

The alarm should be installed by a competent person

Drill two φ5.0mm holes in the wall. The distance between the centers of the two holes should be 52mm

Insert the two provided nails until the top of the nail is about 5 mm from the wall

Test the alarm by using Test Button, you will get 4 chirps with red LED flashs

The alarm keeps normal operation. The green LED will flash every 33 seconds.

LED will not display readings, in order to save energy


Meross Carbon Monoxide Alarm

Techinical Speacifications

  • Sensor type: Electrochemical
  • Product life: About 7 years
  • Recommend Battery Type: GP GN15A
  • Power Supply: DC 3V (2 * 1.5 V alkaline battery)

  • Standby Current: <20μA (average)
  • Alarm Current: <50mA (average)
  • Operation Ambient Condition: -10 ~ +40℃, 30 ~ 95%RH
  • Storage/Transport Ambient Condition: -20 ~ +50℃, 10 ~95%RH
  • Loud>85dB(A)alarm signal at 1m(3ft)
  • Weight: 150 ± 5 g (battery included)

Package Contents

  • 1 x Alarm
  • 2 x Wall Nails
  • 2 x Anchor Plugs
  • 1 x User Manual
GS828 GS546 GS883A
Size 4.76 * 3.15 * 1.44 in φ 4.53 * 0.93 in φ 5.28 * 1.57 in
Detection Type Carbon Monoxide Smoke Smoke and Carbon Monoxide
Sensor Type Electrochemical Photoelectrical Photoelectrical and Electrochemical
Product Life 7 Years 10 Years 10 Years
Battery Life 3 Years 10 Years 10 Years
Test Button
LED Indicator
Low Battery Warning
LCD Digital Display