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

Product Code - QT-XWHM-R-Y-UK

exc VAT £390.00 inc VAT £468.00

The BW GasAlert Quattro multi gas detector is a robust standard four-gas monitor, ideal for applications including oxygen depletion, carbon monoxide and hydrogen sulphide.  This monitor is serviceable and has a range of compatible accessories.


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 (Rechargeable Battery)

BW Technologies introduce the GasAlert Quattro as a robust and trustworthy multi gas detector.  This four gas detector features the following sensors: LEL (filtered) oxygen (O2), hydrogen sulphide (H2S) and carbon monoxide (CO).  This particular version has a rechargeable battery and yellow housing.

Ideal for industrial applications such as confined space entry, the GasAlert Quattro features a very compact and lightweight design with a concussion-proof boot.  It also uses field-proven SureCell sensor technology which provides excellent performance in harsh environments.

CO and H2S sensors have enhanced resistance to common industrial cross sensitive gases such as methanol and ethanol.


Key Features

  • Graphical and continuous LCD screen shows real-time operation for onsite auditing
  • Single-button operation – easy to use and requires very little training
  • Compatible with MicroDock II automatic calibration and test station – buy now
  • Ability to carry out full function test on sensors, battery and alarms
  • Record events and readings with integrated data logging and event logging capabilities
  • Choose from different languages - English, Spanish, German, French and Portuguese
  • Visual confirmation of operation information and compliance with the IntelliFlash function


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

20 hrs (+68 to 122°F / +20 to 50°C)

18 hrs (-4 to +32°F / -20 to 0°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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We offer a range of delivery options to suit your needs including FREE UK (mainland) delivery on all orders over £75 ex VAT, which is web-exclusive.  All UK and International orders are sent using a fully trackable and reliable courier service.  You will receive an email notification upon despatch of your order and tracking details can be requested at any time should you wish to check the status of your delivery.  


International customers also have the option to choose their own courier.  See the delivery page for more details.

Shipping costs are dependant on delivery address and will be calculated at the time of checkout.  Delivery costs are based on a maximum weight of 20kg and maximum dimensions of 40 x 40 x 40 cm.  For orders exceeding these weights and dimensions, please contact us on [email protected] for a delivery quote.

For UK mainland orders, goods will normally be delivered within 3 - 5 working days and for all other orders within 5 - 10 working days.  Delivery timescales are based on stock availability and are subject to change at any time. 

Note: 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.



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

Detection is displayed to the wearer via the large, back-lit LED screen. A graphical interface shows the four gases and the levels detected. This gives you a continuous visual confirmation that the detector is operational via the “Intelliflash” which, simply, is a graphical “beating heart”, showing you that the monitor is at work.

Product Video