Gas detection3
Respiratory protection4
Technical rescue9
Firefighting4
Safety & environment4
Personal protective equipment2
Honeywell GasAlert Extreme — single-gas detector (two-year battery)
The Honeywell GasAlert Extreme is a durable, convenient single-gas detector for reliable monitoring of one of many toxic gases. Available in a wide range of gas variants, with a battery providing about two years of operation. Both the battery and sensor can be replaced easily, even in the field. It displays the gas concentration in real time, has bright wide-angle alarm bars and can operate across consecutive shifts.
The Honeywell GasAlert Extreme is a durable and convenient single-gas detector for reliable monitoring of one of many toxic gases. Available in a wide range of gas variants, with a battery providing approximately two years of operation. The battery and sensor can be easily replaced even in the field. It displays gas concentration in real time, has bright wide-angle alarm bars and can operate across consecutive shifts.
Note: The gas variants (incl. H2S, CO, O2, SO2, NH3, Cl2, ClO2, HCN, PH3, NO, NO2, ETO, O3) are sensor configuration options of the same model — gas selected when ordering.
Key features
- Wide range of toxic gases — variant selected when ordering.
- Battery providing approx. 2 years of operation (replaceable 3 V).
- Battery and sensor replacement even in the field.
- Real-time gas concentration reading on the display.
- Bright, wide-angle alarm bars; audible alarm 95 dB and vibrating alarm.
- Self-test on startup and continuous battery monitoring.
Technical specifications
| Parameter | Value |
|---|---|
| Type | single-gas, replaceable sensor and battery |
| Measured gases | incl. H₂S, CO, O₂, SO₂, NH₃, Cl₂, ClO₂, HCN, PH₃, NO, NO₂, ETO, O₃ |
| Ranges (selected) | H₂S 0–500 ppm (ext.) · CO 0–1000 ppm · NH₃ 0–100 ppm · NO 0–250 ppm · NO₂ 0–100 ppm · PH₃ 0–5 ppm · HCN 0–30 ppm · ETO 0–100 ppm |
| Dimensions / weight | 2.8 × 5.0 × 9.5 cm / 82 g |
| Alarms | visual (wide-angle bars), vibrating, audible 95 dB |
| Self-test | sensor integrity, circuits, alarms and battery status on startup; continuous battery monitoring |
| Battery life | approx. 2 years (replaceable 3 V battery) |
| Operating conditions | −40…+50°C (CO −30…+50°C); humidity 15–90% non-condensing |
| Calibration | automatic O₂ calibration on startup; (1 year for NH₃, Cl₂, O₃, ETO, ClO₂ sensors) |
| Docking | compatible with the MicroDock II station |
Applications
Personal worker protection, confined spaces, industry, water treatment and wastewater, emergency services.
Frequently asked questions (FAQ)
How long does the battery last in the GasAlert Extreme?
About two years. The 3 V battery is replaceable, and battery and sensor replacement can be done even in the field.
Which gases does the GasAlert Extreme detect?
One gas per unit, selected from a wide range: incl. H2S, CO, O2, SO2, NH3, Cl2, ClO2, HCN, PH3, NO, NO2, ETO and O3.
Does the GasAlert Extreme work with a calibration station?
Yes, it is compatible with the MicroDock II station for automatic bump testing and calibration.
Brand & service
Honeywell — SafeTech is an authorized distributor and service station: selection, calibration, certification and adjustment in one place.
Why SafeTech
- 23 years of experience in gas detection (company operating since 2003).
- Authorised distributor and service station (Honeywell, Bieler+Lang).
- In-house service, calibration, certification and adjustment in Suchy Dwór near Gdynia — service throughout Poland.
- Training and technical support (SafeTech Safety Academy).
Availability & service — Gdynia and Tricity
Honeywell GasAlert Extreme — single-gas detector (two-year battery) — sales, selection, calibration and service in Gdynia (Suchy Dwór, on the border of Gdynia and the Kosakowo municipality). We serve the Tricity area (Gdańsk, Sopot, Gdynia), Rumia, Reda, Wejherowo, the Pomerania region and all of Poland. Ask about our offer and availability.
Accessories and compatible equipment
- Calibration & bump test: stacja Honeywell MicroDock II / IntelliDoX, calibration gas mixtures, regulators and pressure-reducing valves for cylinders.
- Sensors & filters: replacement sensors matched to the measured gas, dust and hydrophobic filters.
- Sampling: probe, hose, aspirator bulb (for diffusion versions).
- Carrying & protection: lanyard, clip, holder, transport case, charger/power supply.
Full selection of accessories and parts for this model — request a quote.
