BW GasAlert Quattro LEL(F)O2 H2S CO Gas Detector (Alkaline Battery)
  • O2
  • CO
  • H2S
  • LEL
BW GasAlert Quattro LEL(F)O2 H2S CO Gas Detector (Alkaline Battery)

Product Code - QT-XWHM-A-Y-UK

exc VAT £390.00 inc VAT £468.00
The BW GasAlert Quattro comes with an alkaline battery and is suitable for detecting oxygen depletion, LEL combustibles, hydrogen sulphide and carbon monoxide.

Additional services

Gas detection equipment requires service and calibration every 6 months. In acknowledgement of this we are offering you your first calibration at a special rate.
Description / Features / Spec


BW GasAlert Quattro LEL(F)O2 H2S CO Gas Detector (Alkaline Battery)

BW Technologies offer the GasAlert Quattro as a reliable multi gas detector, ideal for industry applications including confined space entry.  This particular four gas monitor includes a filtered LEL sensors and sensors for oxygen (O2), hydrogen sulphide (H2S) and carbon monoxide (CO).  It also features bright yellow housing and an alkaline battery.

The GasAlert Quattro is a very robust monitor due to its integrated concussion-proof boot.  However, it’s also light in weight and extremely compact which makes it comfortable to wear and carry around. 

Using SureCell sensor technology, this multi gas monitor has the advantage of enhanced resistance to common industrial cross sensitive gases such as methanol and ethanol.  This is particularly found in the CO and H2S sensors of the BW monitor.


Key Features

  • Real-time operation info shown on the LCD display for visual onsite auditing
  • Minimal training required – unit is simple to use with one-button operation
  • MicroDock II automatic test and calibration station is an accessory – buy now
  • Ability to carry out full-function test of sensors, battery and alarms
  • Datalogging and event logging capabilities
  • Available in English, Spanish, German, French and Portuguese
  • IntelliFlash – function gives visual confirmation of operating info and compliance


Sensor Ranges

LEL – 0-100% LEL (0.5% v/v)
O2 – 0-30%
CO – 0-1000 ppm
H2S – 0-200 ppm


LEL – 1% (0.1%)
O2 – 0.1%
CO – 1 ppm
H2S – 0.1 ppm


5.1 x 3.2 x 1.9 in. / 13.0 x 8.1 x 4.7 cm


11.92 oz. / 338 g


-4 to +122°F / -20 to +50°C


10% - 100% RH (non-condensing)


- Visual (six red LEDs), vibrating, audible (95 dB)

- Low, High, STEL, TWA, OL (over limit)

Battery Life

14 hrs (+68 to 122°F / +20 to 50°C)


EMI/RFI: Complies with EMC Directive 2004/108/EC



Class I, Div. 1, Gr. A, B, C, D

ATEX: Xg II 1 G Ga Ex ia IIC T4

IECEx: Ga Ex ia IIC T4

BR-Exia IIC T4


Full two-year warranty including all sensors

What's Included?

  • GasAlertQuattro
  • Rechargeable battery pack or alkaline pack with three AA batteries
  • Charger wall plug (with rechargeable battery option)
  • Calibration cap and hose
  • Reversible screwdriver
  • Manual, materials booklet and technical reference guide (multi-language CD)

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Take advantage of our web-exclusive free UK mainland* delivery offer on orders over £75 ex VAT.  See all costs for delivery below and visit our main delivery page for more information on timescales as some restrictions may apply.

UK & Ireland Delivery Options

UK Mainland Standard Delivery on orders under £75 ex VAT - £5.95 ex VAT*
UK Mainland Express Delivery - £21.50 ex VAT (timescales vary – please see delivery page)
Highlands Delivery - £25.00 ex VAT
Channel Island Delivery - £40 ex VAT
Northern Ireland & Republic of Ireland - £25 ex VAT
Saturday Delivery Options – Please contact us on 0141 771 7749 for more info

Standard delivery timescales are normally 3-5 working days, depending on stock availability.  Express delivery is normally 1-3 working days, depending on stock availability.  Although we carry an extensive stock, there may be some items that are unavailable due to quantities or otherwise.  In this case we will inform you of the status of your order and whether or not it can be fulfilled within our standard delivery timeframe. *Mainland UK delivery excludes Northern Ireland, other charges apply.

Please visit our main delivery page for more terms and conditions or contact our Sales Team on 0141 771 7749  or [email protected] for more information.

International Delivery Options

Delivery costs vary between countries.  Please visit our main delivery page for more information.



Should you wish to cancel an order or return unwanted goods please follow the procedures detailed below to help us ensure cancellations/returns are processed as quickly and efficiently as possible.

Simply log on to your customer account, note the order reference number and email the full cancellation details to [email protected] or contact us on 0844 550 0001. Assuming the order has not been despatched we will cancel.

You have the right to cancel the purchase of goods without having to give a reason at any time within the “cooling off period” of seven working days, beginning the day after you take delivery of your order.

You must notify us of your cancellation in writing via email to [email protected] or to our contact address. (Details Here)

If you are in possession of the goods you are under the duty to retain them and take reasonable care of them.

You must send the goods back to us in their original condition to our contact address at your own cost (unless we delivered the item to you in error or the item is damaged or defective) as soon as possible once you have cancelled the contract.

Alternatively we will collect the goods from you which will incur a charge no greater than the actual cost of arranging the collection and shipping. In this case you must make the goods available for collection. We will contact you to make further arrangements.

We reserve the right to make a charge not exceeding our direct costs of recovering the goods if you do not return the goods or return them at our expense.

Upon receipt of returned items in satisfactory condition we will arrange a full credit by the same method used to pay for the goods originally. Any credit due will be processed within a maximum of thirty days.

Note: If you wish to return goods for refund or exchange after 14 days, a re-stocking fee of 20% of the full order total will apply.

If upon receipt of goods you find them to be faulty, damaged or if you have been incorrectly supplied an item, you should notify us within 24 hours by contacting 0844 500 0001 or [email protected] and quoting your order number and contact details.

Frontline Safety will arrange uplift of any damaged or wrongly received goods and if on inspection of goods we also find them to be damaged, faulty or incorrectly supplied, we will offer replacement goods or provide a full refund.

We recommend you inspect all goods prior to signing for and accepting delivery. If there is any visible damage to the outer packaging, ensure goods are sign for as damaged. In instances where it isn’t possible to sign for goods as damaged, these should be signed for as unexamined.

Note: If your goods happen to develop a fault out with the standard returns period but within supplied warranty period or if you require any additional assistance, please contact us on 0844 550 0001 or email [email protected]


All postage, handling, customs and duty charges for all returned goods are the responsibility of the customer. We recommend using a fully traceable, insured service as goods are your responsibility while in transit.

Related Blog Post

GasAlert Quattro from BW Technologies – Video Demo and Review

In use, the BW GasAlert Quattro is ideal for a variety of industrial applications, such as confined space entry, making it a great compliance monitor, being ATEX approved. And it’s tough as well as smart, rated IP66/67 meaning it’s protected against dust and water ingress, with the housing being concussion-proof.

Product Video