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Alecto COA3920 - Carbon monoxide alarm with 10 year sensor runtime and display

Regular price 28,99 Sale price24,99 Save 14%
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When can I expect my order?
Of course we do everything we can to ship your order as soon as possible. Do you order on working days before 7:00 PM? Then we will ship your package on the same day. Do you order on working days after 7:00 PM? Then you can assume that you will receive the package within 2 working days. Do you place an order on the weekend? Then we will prepare your package for shipment on Monday and you can expect the package on Tuesday.

Do I have to pay shipping costs?
When you place an order above €30, you do not pay shipping costs. If you place an order under €30,-. Then we charge € 4.95 shipping costs.

Which carrier do you work with?
Our packages are shipped with DHL. DHL offers the package to your specified address. If you are not at home, the delivery person will leave a note with a new delivery appointment. A signature is required to receive the package.

Can I track my order?
As soon as your order leaves our warehouse, you will receive a Track & Trace number from us to track your DHL parcel.

The Alecto COA3920 carbon monoxide alarm immediately warns you in the event of carbon monoxide (CO) detection. The alarm has a lifespan of up to 10 years. The alarm is equipped with a stucco grainy wall structure and therefore hides itself inconspicuously and beautifully in almost any interior.

Key features

  • The 10-year sensor ensures you have a safe alarm for a long time.
  • The CO alarm comes with three AA batteries so you can use it straight away.
  • The carbon monoxide alarm goes off when the concentration of carbon monoxide is too high, but also warns you of low concentrations.
  • The carbon monoxide alarm clearly indicates what’s going on using sound and lights. For example, when the batteries are low or when the sensor’s life ends after 10 years.
  • It comes with a bottom plate, screws and plugs for easy and quick assembly.

Wall-mounted housing

The carbon monoxide alarm’s housing, also known as a CO alarm, is remarkably inconspicuous. The alarm is equipped with a stucco granular wall structure. This way it hides nicely in most walls. The CO alarm is compact (78 x 110 x 37 mm (3 x 4 x 1,4")) and suitable for hanging as well as standing.

It also warns of low carbon monoxide concentration

Carbon monoxide alarms display the concentration of carbon monoxide in ppm. Ppm stands for parts per million, or number of parts per one million particles. It is required by law that CO alarms sound the alarm at a detected concentration of carbon monoxide over 50 ppm for 60 minutes. Even when you sleep, an alarm of >85dB will not go unnoticed.

A long-term presence of a low CO concentration is also harmful to your health. The Alecto COA3920 carbon monoxide alarm already gives a warning when a concentration of 30 ppm or less is detected for 60 minutes.

Additional insight on the display

The COA3920’s display provides additional insight. For example, the carbon monoxide concentration is displayed on the display at - usually - 000ppm. Furthermore, the display provides insight into the battery status and shows notifications when the CO concentration is too high, when it’s in test mode and if there are any error messages.

Highest quality

Like all Alecto carbon monoxide alarms, they are of the highest quality and comply with the European Standard (EN50291-1:20180). The Alecto COA3920 has a test button which allows you to periodically evaluate whether the carbon monoxide alarm still works properly. No more worries about carbon monoxide with this handy CO alarm!

The Alecto COA3920 is also available without a display as model COA1910.

What's in the box?

  • Carbon monoxide alarm COA3920
  • 3 AA batteries
  • Bottom plate
  • 2 mounting screws and plugs
  • Manual NL / EN / DE / FR
Height78 mm
Length37 mm
Width110 mm
Weight204 g
Alarm signal strength85.0000dB
Alarm signal typeAudible signal
Audible signal detection low concentration carbon monoxide from30 ppmppm
Backup batteryNo
Batteries includedYes
Battery 1 capacity2900mAh
Battery 1 chemical compositionAlkaline
Battery 1 HazmatNo
Battery 1 includedYes
Battery 1 operating time standard usage1051200min
Battery 1 rechargeableNo
Battery 1 replaceable / built-inReplaceable
Battery 1 typeAA
Battery 1 usage for (main function product)Main product
Battery 1 voltage1.50V
Battery 1 weight23g
Battery 2 HazmatNo
Battery level indicatorYes
Battery life time 10 yearsNo
Battery life up to2year
CO alarm from50ppm
ColourWhite
Communication technologyNot applicable
ConnectableNo
DetectionCarbon monoxide
Detection technologyElectro-chemical
Detection/display of CO from20ppm
Detector typeCarbon Monoxide (CO)
DisplayYes
Display in screenCarbon monoxide level from 10 ppm
Electronic anti-theft security tags requiredNo
Emergency lightNo
Fire retardant ABS plasticNo
Hush / mute functionYes
Low battery indicatorYes
MaterialPlastic
Maximum humidity range90%
Maximum number connectableNot applicable
Minimum humidity range0%%
Mounting systemScrew Mounting
Number of batteries 13
Number of Products in Package1pcs
Operating temperature range-10 - 45°C
Power source typeBattery Powered
Required batteries (included)3x AA/LR6
Sensor life cycle10year
Sensor life time 10 yearsYes
SmartLifeNo
Sound85dB
Suitable for magnetic mountingYes
Time-out/ pause functionNo
UN38.3 applicable / Product has a lithium ion batteryNo
Where to use/placeIndoor, Living room, Warehouse, Workshop, Bedroom, Garage
With pause buttonYes
With test buttonYes

Customer Reviews

Based on 20 reviews
65%
(13)
5%
(1)
25%
(5)
5%
(1)
0%
(0)
W
Wim van Wely

kan nog geen beoordeling geven. Hangen net twee dagen. Over een paar jaar misschien wel.

M
M. Brouwer
CO2 melder

Prima apparaat en zeer snelle levering. Eenvoudige bevestiging.

F
F.H. Seijlhouwer
Dom.

Leuk apparaat maar een waardeloze, onleesbare handleiding

D
D Bijl
Prima

Snelle levering en betrouwbaar apparaat

K
Kerosch
Prima Koolmonoxidemelder

Snel de melder ontvangen en makkelijk te installeren.