QRAE II (PGM-2400) Diff. LEL ATEX/O2/H2S/CO Gas Detector
QRAE II (PGM-2400) Diff. LEL ATEX/O2/H2S/CO Gas Detector

Product Code - 020-1121-3B0

exc VAT £299.00 inc VAT £358.80
Please note: this product is now obsolete, but servicing is still available. This has been replaced by the BW GasAlertMicroClip XL, available on the Frontline Safety website.
Description / Features / Spec


QRAE II (PGM-2400) Diffusion, LEL ATEX / O2 / H2S / CO Gas Detector

Please note: this product is now obsolete, but servicing is still available.  This has been replaced by the BW GasAlertMicroClip XL, available on the Frontline Safety website.

The QRAE II is a compact, multi gas detector from RAE Systems and is ideal for applications where confined space entry and general safety and compliance are required.  This may include industries such as emergency response, environmental, fire service, industrial safety and also oil and gas.

This model in particular is a diffusion type detector and can safely monitor oxygen depletion, hydrogen sulphide (H2S), combustibles and also carbon monoxide (CO).

The O2 sensor in particular is patented and features a leak-free design which complies with RoHS directives.

Key Features

  • Pump, sensors, filter and battery compartment are easily accessible
  • Robust, rugged housing with concussion-proof design
  • Simple to operate with two-button user interface
  • Multi-language support
  • One-button calibration
  • Large graphical display, LED backlit and can be flipped 180°
  • Instant readings from four sensors plus high and low values for all gases
  • Datalogging capability – standard 12 days at 1 min intervals


  • 0 to 100% LEL
  • 0 to 30.0% O2
  • 0 to 100 ppm H2S
  • 0 to 1000 ppm CO
  • 1% LEL
  • 0.1% O2
  • 0.1 ppm H2S
  • 1 ppm CO
Dimensions 5" L x 2.8" W x 1.5" H (12.5cm x 7.2cm x 3.8cm)
Weight 9 oz (250 g)
Battery Interchangeable Lithium-Ion or alkaline battery packs
Operating Period Up to 14 hours continuous operation with Lithium-ion battery, up to 10 hours with alkaline battery (typical, without alarm)
  • Audible 95dB @ 30cm
  • Vibration
  • Visible Alarm (flashing bright LEDs)
  • High and Low values
  • STEL and TWA values
  • Additional diagnostic alarm and display message for low battery
IP Rating IP-65
Temperature -4° to 113° F (-20° to 50°C) for T4 temperature codes
Calibration Two-point calibration for zero and span (manual, or automatic with the AutoRAE Lite)
Humidity 0% to 95% relative humidity (non-condensing)
Hazardous Area Approval 
  • US and Canada: CI, D1, Groups A, B, C, D, T4
  • Europe: ATEX II 2G EEx ia d IIc T4
  • IECEX: Ex ia d II C T4
Warranty Full 2-year warranty, including all sensors
What's Included
  • QRAE II monitor (Diffusion) with sensors as specified
  • Stainless-steel alligator clip
  • Calibration adapter and internal filters
  • Quick reference guide
  • User manual and ProRAE Studio Software Package for Windows® 2000, NT and XP on CD-ROM
  • Alkaline adapter
  • Charging/download cradle with computer interface cable
  • Universal adapter and lithium-ion battery pack

0 Customer Review(s)

Be the first to review this product

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

Our offices will close for Christmas on the 23rd of December at 5.30pm until Monday the 4th of January, 2021 where we will be open from 8.30am.  Our last shipping day for in-stock orders will be the 23rd of December before 12pm.  Please check with our Sales Team on 0141 771 7749 for stock availability.  Any orders made during the period of closure will not be processed until the 4th of January and a lead time will advised.  

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 fourteen 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

QRAE II Gas Detectors – What Are the Features and Benefits

The QRAE II features an additional diagnostic alarm and a display message should the battery be running low. The battery itself is a rechargeable lithium-ion which will offer you up to 14 hours of continuous use per charge.  Calibration is simple via a one-button operation, and all the read-outs are displayed on large, back-lit LED screen which can be rotated through 180°.

Product Video

You may also be interested in the following product(s)