Description
BW Honeywell GasAlert MicroClip X3 Multi-Gas Detector H2S, CO, O2, LEL (Longlife O2 sensor) made simple, the most popular order number: MCX3-XWHM-Y-OE
The easy to wear, slim and compact “BW Honeywell GasAlert MicroClip X3 Multi-Gas Detector H2S, CO, O2, LEL (Longlife O2 sensor)” provides affordable protection from atmospheric gas hazards and extended battery life, especially in cold weather. The GasAlertMicroClip X3 features visual compliance at a glance with the flashing, green IntelliFlash™. Easy one button operation reduces training time and lets workers focus on the job at hand. For simple, cost-effective management of your records, calibration and bump testing, choose BW’s MicroDock II and IntelliDoX automatic test and calibration system and Fleet Manager II software.
Meets ACGIH 1 ppm H₂S TWA recommendations. Visit honeywellanalytics.com to download the latest Fleet Manager II update.
Standard Package Contents
- Detector complete with specified sensor(s), stainless steel alligator clip and concussion-proof housing
- Rechargeable battery
- Wall outlet charging adaptor
- Calibration/test cap and hose
- Manual

Gas Legend | |
%LEL | Combustible (W) |
O2 | Oxygen (X) |
H2S | Hydrogen sulfide (H) |
CO | Carbon monoxide (M) |
Filtered combustible (%LEL) sensor configurations for MicroClip X3
GasAlertMicroClip X3 4-Gas Detector | Yellow | Black |
GasAlert MicroClip X3 %LEL(F) O2 H2S CO | MCX3-XWHM-Y-NA | MCX3-XWHM-B-NA |
GasAlertMicroClip X3 3-Gas Detector | Yellow | Black |
GasAlert MicroClip X3 %LEL(F) O2 H2S | MCX3-XWH0-Y-NA | MCX3-XWH0-B-NA |
GasAlert MicroClip X3 %LEL(F) O2 CO | MCX3-XW0M-Y-NA | MCX3-XW0M-B-NA |
GasAlert MicroClip X3 %LEL(F) H2S CO | MCX3-0WHM-Y-NA | MCX3-0WHM-B-NA |
GasAlert MicroClip X3 O2 H2S CO | MCX3-X0HM-Y-NA | MCX3-X0HM-B-NA |
GasAlertMicroClip X3 2-Gas Detector | Yellow | Black |
GasAlert MicroClip X3 %LEL(F) O2 | MCX3-XW00-Y-NA | MCX3-XW00-B-NA |
GasAlert MicroClip X3 %LEL(F) H2S | MCX3-0WH0-Y-NA | MCX3-0WH0-B-NA |
GasAlert MicroClip X3 %LEL(F) CO | MCX3-0W0M-Y-NA | MCX3-0W0M-B-NA |
GasAlert MicroClip X3 H2S CO | MCX3-00HM-Y-NA | MCX3-00HM-B-NA |
GasAlert MicroClip X3 O2 H2S | MCX3-X0H0-Y-NA | MCX3-X0H0-B-NA |
GasAlert MicroClip X3 O2 CO | MCX3-X00M-Y-NA | MCX3-X00M-B-NA |
GasAlertMicroClip X3 1-Gas Detector | Yellow | Black |
GasAlert MicroClip X3 O₂ | MCX3-X000-Y-NA | MCX3-X000-B-NA |
GasAlert MicroClip X3 H₂S | MCX3-00H0-Y-NA | MCX3-00H0-B-NA |
GasAlert MicroClip X3 CO | MCX3-000M-Y-NA | MCX3-000M-B-NA |
*Honeywell Analytics recommends using a combustible (LEL) sensor only when accompanied by an oxygen (O2) sensor. As oxygen is required for the detection of combustible gases, a LEL sensor may not detect combustible hazards in an oxygen deprived environment.
Note: This page lists configurations using filtered LEL sensors only. See the next page for configurations using non-filtered LEL sensors. For more information on filtered and non-filtered LEL sensors, please refer to the Section on Filtered LEL Sensor Information.
GasAlertMicroClip X3 Region Codes |
For orders outside North America, change order number component “-NA” to: |
“-UK” United Kingdom |
“-NA” North America |
“-AU” Australia |
“-CN” China |
“-BR” Brazil |
“-OR” 3 pin UK plug |
“-JP” Japan Ex |
“-OE” others |
Non-filtered combustible (%LEL) sensor configurations for MicroClip X3
GasAlertMicroClip X3 4-Gas Detector | Yellow | Black |
GasAlert MicroClip X3 %LEL(U) O2 H2S CO | MCX3-XUHM-Y-NA | MCX3-XUHM-B-NA |
GasAlertMicroClip X3 3-Gas Detector | Yellow | Black |
GasAlert MicroClip X3 %LEL(U) O2 H2S | MCX3-XUH0-Y-NA | MCX3-XUH0-B-NA |
GasAlert MicroClip X3 %LEL(U) O2 CO | MCX3-XU0M-Y-NA | MCX3-XU0M-B-NA |
GasAlert MicroClip X3 %LEL(U) H2S CO | MCX3-0UHM-Y-NA | MCX3-0UHM-B-NA |
GasAlertMicroClip X3 2-Gas Detector | Yellow | Black |
GasAlert MicroClip X3 %LEL(U) O2 | MCX3-XU00-Y-NA | MCX3-XU00-B-NA |
GasAlert MicroClip X3 %LEL(U) H2S | MCX3-0UH0-Y-NA | MCX3-0UH0-B-NA |
GasAlert MicroClip X3 %LEL(U) CO | MCX3-0U0M-Y-NA | MCX3-0U0M-B-NA |
*Honeywell Analytics recommends using a combustible (LEL) sensor only when accompanied by an oxygen (O2) sensor. As oxygen is required for the detection of combustible gases, a LEL sensor may not detect combustible hazards in an oxygen deprived environment.
Note: This page lists configurations using non-filtered LEL sensors only. See the previous page for configurations using filtered LEL sensors. For more information on filtered and non-filtered LEL sensors, see Section on Filtered LEL Sensor Information.
GasAlertMicroClip X3 Region Codes |
For orders outside North America, change order number component “-NA” to: |
“-UK” United Kingdom |
“-NA” North America |
“-AU” Australia |
“-CN” China |
“-BR” Brazil |
“-OR” 3 pin UK plug |
“-JP” Japan Ex |
“-OE” others |
Confined Space Entry Kit for BW Honeywell MicroClip X3
Description | Order Number |
Confined Space Kit GasAlert MicroClip XL and X3 GasAlertMicroClip X3 deluxe confined space kit – includes manual aspirator kit, IR connectivity kit with Fleet Manager II software, calibration cap with 1 ft. / 0.3 m hose, 0.5 LPM regulator, sampling probe, leather carrying case, auxiliary filter and carrying case with foam insert. |
MC-CK-DL |
Detector and calibration gas sold separately. | |
Carrying Case for GasAlert MicroClip XL and X3 with foam and lid insert | MC-CK-CC |
Detector and calibration gas sold separately |
Carrying & Protective Accessories for BW Honeywell GasAlert MicroClip X3 Multi-Gas Detector H2S, CO, O2, LEL (Longlife O2 sensor)
Description | Order Number |
Neck strap with safety release | GA-NS-1 |
Short strap (6 in./15.2 cm) | GA-LY-1 |
Extension strap (4 ft./1.2 m) | GA-ES-1 |
Chest harness | GA-CH-2 |
Black leather and PVC carrying holster GasAlert MicroClip XL and X3 | MC2-LC-1 |
Auxiliary Filter Kit (complete with filter adaptor and 5 filters) | MC-AF-K1 |
Auxiliary Filter Adaptor (no filter) | MC-AF-1 |
Auxiliary Filter Filter replacement for adaptor (kit of 10) | MC-SS-AF-K1 |

Honeywell BW™ Connect IR to BLE Adaptor
Get real-time visibility on your workers’ safety and location without the cost or complexity of wireless gas detectors. With Honeywell BW Connect, it is easy to bring connectivity to your trusted current fleet of BW gas detectors. The below pricing is for the BW Connect adapter. For instructions on how to download and use Safety Communicator, please refer to the BW Connect manual. For pricing on options of software, please contact your local Sales Manager.
Supported Products:
BW MicroClip XL
BW MicroClip X3
BW Max XT II
Note: Safety Suite Real Time license is needed to connect to Systems’ Real Time Monitoring
Description | Order Number |
BW Connect BLE adapter | BW-CONNECT |
Honeywell BW MCX3 Sampling & Testing Equipment
Description | Order Number |
Manual aspirator pump kit with probe, no filter (0.3 m / 1 ft.) for GA MicroClip Series | MC-AS01 |
Test cap and hose (1 ft/0.3 m) replacement | MC-TC-1 |
Note: For complete list of Sampling & Testing Equipment, please refer to the Sampling Accessories section
Power Supplies and Spares for BW Honeywell GasAlertMicroClip Series
Description | Order Number |
Multi-unit (5) cradle charger | MC2-C01-MC5 |
Multi-unit (5) wall outlet power adaptor | GA-PA-1-MC5-NA* |
Vehicle 12-24VDC power adaptor with plug | GA-VPA-1 |
Vehicle 12-24VDC direct-wire power adaptor | GA-PA-3 |
Replacement wall outlet power adaptor | GA-PA-1-NA* |
*For regions outside North America replace “-NA” with: “-UK” for United Kingdom , “-EU” for Europe and “-AU” for Australia
Description | Order Number |
IR connectivity kit with Fleet Manager II software | GA-USB1-IR |

Replacement Sensor Screens | Order number |
Replacement quad sensor screen filter for GasAlertMicroClip XL/X3 (kit of 2) | MC2-SS |
Replacement quad sensor screen filter for GasAlertMicroClip XL/X3 (kit of 10) | MC2-SS-K1 |
Replacement Sensors | Order Number |
Replacement MICROpeL® combustible (LEL) sensor, filtered | SR-W-MP75C |
Replacement MICROpeL® combustible (LEL) sensor, unfiltered | SR-W-MP75 |
Replacement oxygen (O2) sensor (3 years, for GasAlertMicroClip X3)* | SR-X3P |
Replacement MICROceL® hydrogen sulfide (H₂S) sensor | SR-H-MC |
Replacement MICROceL® carbon monoxide (CO) sensor | SR-M-MC |
Dummy sensor for combustible (LEL) sensor location | SR-W-MC-DUM |
Dummy sensor for the oxygen sensor location | SR-DUMM1 |
Dummy sensor for toxic sensor locations | SR-TOX-MC-DUM |
Note: All sensors come with a 2 year warranty unless marked with an asterisk (*), denoting 3 year warranty.

IntelliDoX, unmatched performance and customization.
The IntelliDoX instrument management system combines smart docking modules with Safety Suite Device Configurator software to provide automated instrument management, helping drive productivity, reliability and efficiency. Place the detector in the docking module, and it automatically tests the gas detector and sensors while transferring data to the docking station.
(see IntelliDoX section for additional information)
Service parts for BW Honeywell GasAlertMicroClip X3 Multi-Gas detector

Note: Please refer to the instrument’s documentation (shipped with the product or available at www.honeywellanalytics.com) for complete instructions on common service procedures. Improper servicing or maintenance may affect warranty eligibility.
Honeywell assumes no liability for damages resulting from imprope servicing or maintenance.
Service Parts | Legend | Minimum Service Training Level |
Order Number |
Replacement LCD Kit GasAlert MicroClip XT/XL/X3 | A | Level-1 | MC-LCD-K1 |
Replacement front enclosure (yellow) for GasAlertMicroClip X3 with 6 screws of one type |
B | Level-1 | MCX3-FC1 |
Replacement front enclosure (black) for GasAlertMicroClip X3 with 6 screws of one type |
B | Level-1 | MCX3-FC1B |
Replacement combustible sensor, see previous page | C | Level-1 | |
Replacement main PCB with battery and screws | D | Level-2 | MCX3-MPCB1 |
Replacement back enclosure (yellow) with screws and alligator clip | E | Level-1 | MCX3-BC1 |
Replacement back enclosure (black) with screws and alligator clip | E | Level-1 | MCX3-BC1B |
Replacement screws (kit of 20) – PCB Screws (one type, same as back case screws); back case screws (one type, same as PCB screws) |
F | None | MC-SCREW-K1 |
Replacement toxic and oxygen sensors, see previous page | G,H,I | Level-1 | |
Replacement sensor screen, see previous page | J | Level-1 | |
Oxygen (O₂) sensor PCB including flex cable | K | Level-2 | MCX3-FPCB1 |
Replacement vibration motor | Level-1 | GA-VM-2 |
Note: For service and trainings, please refer to the Training and Service Information sections
How to Replace a Sensor |
1. With detector OFF, use No. 1 Phillips screwdriver to remove |
6 screws from back enclosure (E) |
2. Lift back enclosure (E) straight up |
3. Use No. 1 Phillips screwdriver to remove 2 screws from |
back of PCB (D) |
4. Lift PCB (D) together with battery and sensors (C, G, H, I) |
straight up |
5. Remove sensors (C, G, or H) by sliding out or sensor (I) by |
pulling straight up from PCB (D) |
6. Insert new sensor (C, G, H, I) into PCB (D) |
7. Replace PCB (D) and 2 screws and hand-tighten until firm |
8. Replace back enclosure (E) |
9. Replace 6 screws in back enclosure (E) and |
hand-tighten until firm |
How to Replace the Sensor Screen |
1. With detector OFF, use No. 1 Phillips screwdriver to remove |
6 screws from back enclosure (E) |
2. Lift back enclosure (E) straight up |
3. Use No. 1 Phillips screwdriver to remove 2 screws from |
back of PCB (D) |
4. Lift PCB (D) together with battery and sensors (C, G, H, I) |
straight up |
5. Remove sensor screen (J) from front enclosure (B) |
6. Insert new sensor screen (J) into front enclosure (B) |
7. Replace PCB (D) and 2 screws and hand-tighten until firm |
8. Replace back enclosure (E) |
9. Replace 6 screws in back enclosure (E) and |
hand-tighten until firm |
Note: Please refer to the instrument’s documentation (shipped with the product or available at www.honeywellanalytics.com) for complete instructions on common service procedures. Improper servicing or maintenance may affect warranty eligibility.
Honeywell assumes no liability for damages resulting from imprope servicing or maintenance.
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