{"product_id":"bw-gasalertclip-extreme-h2s-monitor","title":"BW GasAlertClip Extreme H2S Monitor — 2-Year Disposable Single-Gas","description":"\u003c!-- PRODUCT B00APKZWRG | tag personal-gas-detector | TODO: add matching Product Review + best-of guide links when those silo layers exist --\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:4px solid #ff9800;padding:14px 18px;margin:0 0 18px 0;color:#f5e6d3;font-size:0.95em;\"\u003e\n\u003cstrong style=\"color:#ffb74d;\"\u003eEditor’s note:\u003c\/strong\u003e the BW GasAlertClip Extreme H2S is one of the instruments we curate in our \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e buyer’s hub. Compare it with the \u003ca href=\"\/products\/toptes-guard-633-h2s-detector\" title=\"TopTes Guard-633 H2S\"\u003eTopTes Guard-633 H2S\u003c\/a\u003e below before you order.\u003c\/div\u003e\n\n\u003ch2 id=\"top\"\u003eBW GasAlertClip Extreme H2S Monitor — 2-Year Disposable Clip\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eBW GasAlertClip Extreme H2S\u003c\/strong\u003e is a 2-year disposable single-gas clip for hydrogen sulfide — a set-and-forget \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"personal gas detector\"\u003epersonal gas detector\u003c\/a\u003e you turn on once and wear for two years with no battery or sensor service.\u003c\/p\u003e\n\n\u003cp style=\"font-size:0.9em;color:#bdae9d;margin:10px 0 18px 0;\"\u003eJump to: \u003ca href=\"#features\" style=\"color:#ffb74d;\"\u003eFeatures\u003c\/a\u003e · \u003ca href=\"#specs\" style=\"color:#ffb74d;\"\u003eSpecs\u003c\/a\u003e · \u003ca href=\"#compatibility\" style=\"color:#ffb74d;\"\u003eWhat it detects\u003c\/a\u003e · \u003ca href=\"#comparison\" style=\"color:#ffb74d;\"\u003eComparison\u003c\/a\u003e · \u003ca href=\"#faq\" style=\"color:#ffb74d;\"\u003eFAQ\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe BW GasAlertClip Extreme H2S is a 2-year disposable, electrochemical single-gas personal monitor for hydrogen sulfide with audible, visual and vibrating alarms.\u003c\/p\u003e\n\n\u003ch3 id=\"features\"\u003eKey features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eWorn in the breathing zone to alarm on hydrogen sulfide (H2S) exposure\u003c\/li\u003e\n\u003cli\u003e2-year disposable design — turn it on and run it with no battery or sensor service\u003c\/li\u003e\n\u003cli\u003eAudible, visual and vibrating alarms\u003c\/li\u003e\n\u003cli\u003eSet-and-forget simplicity; no docking infrastructure required\u003c\/li\u003e\n\u003cli\u003eStrong 4.3-star, 97-review track record\u003c\/li\u003e\n\u003cli\u003eAn alternative to the BW Clip for the same H2S hazard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"display:flex;gap:14px;flex-wrap:wrap;margin:18px 0;\"\u003e\n\u003cdiv style=\"flex:1;min-width:240px;background:#1b3a2a;border:1px solid #4caf50;border-radius:6px;padding:14px 18px;\"\u003e\n\u003cstrong style=\"color:#81c784;\"\u003ePros\u003c\/strong\u003e\u003cul style=\"margin:8px 0 0 0;\"\u003e\n\u003cli\u003e2-year run with zero maintenance\u003c\/li\u003e\n\u003cli\u003eSet-and-forget, no docking needed\u003c\/li\u003e\n\u003cli\u003eTriple alarm modes\u003c\/li\u003e\n\u003cli\u003eLow cost per worker\u003c\/li\u003e\n\u003cli\u003eProven review base\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:240px;background:#3a1e1e;border:1px solid #ef5350;border-radius:6px;padding:14px 18px;\"\u003e\n\u003cstrong style=\"color:#e57373;\"\u003eCons\u003c\/strong\u003e\u003cul style=\"margin:8px 0 0 0;\"\u003e\n\u003cli\u003eSingle gas only — H2S\u003c\/li\u003e\n\u003cli\u003eDisposable (replace at end of life)\u003c\/li\u003e\n\u003cli\u003eStill needs bump testing\u003c\/li\u003e\n\u003cli\u003eNo data export\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 id=\"specs\"\u003eSpecifications\u003c\/h3\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;margin:14px 0;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n\u003cth style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eGas detected\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eHydrogen sulfide (H2S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eSensor\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eElectrochemical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eService life\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003e2 years, disposable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eAlarms\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eAudible, visual \u0026amp; vibrating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eCalibration\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eFactory-set; bump test recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eMaintenance\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eNone — no battery or sensor service\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eForm\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eCompact breathing-zone clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eWhere the BW GasAlertClip Extreme fits\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eOil-and-gas and wellsite work\u003c\/li\u003e\n\u003cli\u003eWastewater and sewer entry\u003c\/li\u003e\n\u003cli\u003eRefineries and pulp\/paper\u003c\/li\u003e\n\u003cli\u003eTank and vessel work with H2S\u003c\/li\u003e\n\u003cli\u003eOne clip per worker across a crew\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat the BW GasAlertClip Extreme detects (and what it doesn’t)\u003c\/h2\u003e\n\n\u003cp\u003eIt detects \u003cstrong\u003ehydrogen sulfide (H2S) only\u003c\/strong\u003e — not CO, O2 or combustibles. For multi-gas wear use a 4-gas unit like the \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e hub’s GasAlertMicroClip XL; for the maintenance-free serviceable alternative see the \u003ca href=\"\/products\/honeywell-bw-clip-h2s-monitor-bwc2-h\" title=\"Honeywell BW Clip H2S\"\u003eHoneywell BW Clip H2S\u003c\/a\u003e. It is a personal exposure monitor — confined-space entry still needs pre-entry testing with a \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e instrument. Bump-test with H2S calibration gas before use.\u003c\/p\u003e\n\n\u003cp\u003eCross-shopping? This unit sits in our \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e hub alongside \u003ca href=\"\/products\/toptes-guard-633-h2s-detector\" title=\"TopTes Guard-633 H2S\"\u003eTopTes Guard-633 H2S\u003c\/a\u003e, \u003ca href=\"\/products\/honeywell-bw-clip-h2s-monitor-bwc2-h\" title=\"Honeywell BW Clip H2S\"\u003eHoneywell BW Clip H2S\u003c\/a\u003e. For other gas-detection form factors see \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e, \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"Fixed Gas Detection Systems\"\u003eFixed Gas Detection Systems\u003c\/a\u003e, \u003ca href=\"\/collections\/area-gas-monitors\" title=\"Area \u0026amp; Transportable Gas Monitors\"\u003eArea \u0026amp; Transportable Gas Monitors\u003c\/a\u003e, or browse the full \u003ca href=\"\/collections\/gas-detectors\" title=\"Gas Detectors\"\u003eGas Detectors\u003c\/a\u003e range.\u003c\/p\u003e\n\n\u003ch2 id=\"comparison\"\u003eHoneywell BW personal H2S monitors compared\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;margin:14px 0;\"\u003e\n\u003ccaption style=\"color:#bdae9d;font-size:0.85em;text-align:left;padding:4px 0;\"\u003eHoneywell BW personal H2S monitors\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eService model\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eRun time\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eNotable\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eStreet price\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003ca href=\"\/products\/honeywell-bw-clip-h2s-monitor-bwc2-h\" title=\"BW Clip H2S (BWC2-H)\"\u003eBW Clip H2S (BWC2-H)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eMaintenance-free\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e2 years sealed\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eNo sensor\/battery service\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#2a2520;\"\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003cstrong\u003e\u003ca href=\"\/products\/bw-gasalertclip-extreme-h2s-monitor\" title=\"GasAlertClip Extreme H2S\"\u003eGasAlertClip Extreme H2S\u003c\/a\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eDisposable\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e2 years\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eSet-and-forget, no docking needed\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$124\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\u003cli\u003eChoose the \u003cstrong\u003eGasAlertClip Extreme\u003c\/strong\u003e for a simple 2-year disposable H2S clip with no docking needed.\u003c\/li\u003e\n\u003cli\u003ePrefer the same maker’s maintenance-free line? See the \u003ca href=\"\/products\/honeywell-bw-clip-h2s-monitor-bwc2-h\" title=\"BW Clip H2S\"\u003eBW Clip H2S\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eFor a lower-cost rechargeable H2S clip, see the \u003ca href=\"\/products\/toptes-guard-633-h2s-detector\" title=\"TopTes Guard-633\"\u003eTopTes Guard-633\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"faq\"\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat gas does the BW GasAlertClip Extreme detect?\u003c\/h3\u003e\u003cp\u003eHydrogen sulfide (H2S) only, with audible, visual and vibrating alarms. For several gases on one worker, use a 4-gas wearable.\u003c\/p\u003e\n\u003ch3\u003eHow long does it last?\u003c\/h3\u003e\u003cp\u003eTwo years from activation, then you replace the whole unit — it is a disposable design with no battery or sensor service in between.\u003c\/p\u003e\n\u003ch3\u003eHow is it different from the BW Clip H2S?\u003c\/h3\u003e\u003cp\u003eBoth are 2-year H2S clips; the \u003ca href=\"\/products\/honeywell-bw-clip-h2s-monitor-bwc2-h\" title=\"BW Clip H2S\"\u003eBW Clip H2S\u003c\/a\u003e is the current maintenance-free line, while the GasAlertClip Extreme is the established disposable model. Either covers the same H2S hazard.\u003c\/p\u003e\n\u003ch3\u003eDoes it need docking or calibration?\u003c\/h3\u003e\u003cp\u003eNo docking is required — it is set-and-forget. You should still bump-test with H2S gas before use to confirm response.\u003c\/p\u003e\n\u003ch3\u003eWhere should it be worn?\u003c\/h3\u003e\u003cp\u003eIn the breathing zone, clipped to the collar or upper chest within about 12 inches of the nose and mouth.\u003c\/p\u003e\n\u003ch3\u003eIs it rechargeable?\u003c\/h3\u003e\u003cp\u003eNo — it is a sealed 2-year disposable. For a rechargeable H2S clip, see the \u003ca href=\"\/products\/toptes-guard-633-h2s-detector\" title=\"TopTes Guard-633\"\u003eTopTes Guard-633\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat alarms does it have?\u003c\/h3\u003e\u003cp\u003eAudible, visual and vibrating alarms trigger when H2S crosses the set point.\u003c\/p\u003e\n\u003ch3\u003eCan one unit cover a crew?\u003c\/h3\u003e\u003cp\u003eNo — issue one per worker. For area coverage use a \u003ca href=\"\/collections\/area-gas-monitors\" title=\"Area \u0026amp; Transportable Gas Monitors\"\u003eArea \u0026amp; Transportable Gas Monitors\u003c\/a\u003e monitor; for pre-entry a \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e instrument.\u003c\/p\u003e\n\u003ch3\u003eIs it good for oil and gas?\u003c\/h3\u003e\u003cp\u003eYes — H2S clips are standard PPE in oil and gas, wellsite, refinery and wastewater work where H2S is the dominant hazard.\u003c\/p\u003e\n\u003ch3\u003eIs it in stock and how does it ship?\u003c\/h3\u003e\u003cp\u003eUse the Amazon buy button for current availability and delivery timing through our fulfillment partner.\u003c\/p\u003e\n\u003ch3\u003eDoes it detect anything besides H2S?\u003c\/h3\u003e\u003cp\u003eNo. For CO use the \u003ca href=\"\/collections\/carbon-monoxide-alarms-detectors\" title=\"Carbon Monoxide Alarms \u0026amp; Detectors\"\u003eCarbon Monoxide Alarms \u0026amp; Detectors\u003c\/a\u003e range; for multi-gas a 4-gas wearable in the \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e hub.\u003c\/p\u003e\n\u003ch3\u003eDo I still need pre-entry testing?\u003c\/h3\u003e\u003cp\u003eYes — a personal clip supplements but does not replace pre-entry atmospheric testing with a \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e instrument.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border:1px solid #3a3a3a;border-radius:6px;padding:16px 18px;margin:22px 0;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;color:#f5e6d3;\"\u003eReady to order the \u003cstrong\u003eBW GasAlertClip Extreme H2S\u003c\/strong\u003e? Add it to your cart above, or check the current Amazon price below. Compare it against the rest of our \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e lineup before you buy.\u003c\/p\u003e\n\u003cp style=\"display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:0;\"\u003e\u003ca href=\"https:\/\/www.amazon.com\/dp\/B00APKZWRG?tag=wcsafety04-20\" rel=\"sponsored nofollow noopener\" target=\"_blank\" style=\"display:inline-block;background:#FFD814;color:#0F1111;padding:13px 26px;text-decoration:none;font-weight:bold;border-radius:4px;border:1px solid #FCD200;\"\u003eCHECK PRICE ON AMAZON →\u003c\/a\u003e\u003cspan style=\"font-size:0.8em;color:#bdae9d;\"\u003eAs an Amazon Associate, WC Safety earns from qualifying purchases.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a2733;border:1px dashed #4fc3f7;padding:16px 20px;margin:30px 0 18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eWhy trust this Honeywell BW page?\u003c\/strong\u003e WC Safety is an independent industrial safety-equipment retailer serving safety managers, procurement teams and field supervisors. The specifications here are taken from the manufacturer’s published listing for BW GasAlertClip Extreme and framed against \u003ca href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1910\/1910.146\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA 29 CFR 1910.146\u003c\/a\u003e and \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA Permissible Exposure Limits\u003c\/a\u003e. Disclosed: WC Safety earns Amazon affiliate commissions on outbound clicks; that does not influence the specs shown or our lineup.\n\u003c\/div\u003e\n\u003cdiv style=\"background:#1a2733;border-left:4px solid #4fc3f7;padding:18px 22px;margin:18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eBy Steven Eaton, WC Safety Editorial\u003c\/strong\u003e — Industrial safety-equipment desk · specialization: atmospheric monitoring, gas detection and instrument selection.\u003cbr\u003e\n  \u003cstrong\u003eLast updated:\u003c\/strong\u003e \u003ctime datetime=\"2026-06-22\"\u003eJune 22, 2026\u003c\/time\u003e · \u003cstrong\u003eSources reviewed:\u003c\/strong\u003e manufacturer product listing \u0026amp; specifications, OSHA 29 CFR 1910.146, OSHA Annotated PEL tables, ACGIH Threshold Limit Values.\u003cbr\u003e\n  \u003cstrong\u003eEditorial standard:\u003c\/strong\u003e \u003cem\u003eZero sponsored listings. No manufacturer input. Specs verified against the manufacturer’s published data.\u003c\/em\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#1a2733;border-left:4px solid #4fc3f7;padding:16px 20px;margin:18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eHow this page is maintained.\u003c\/strong\u003e Specifications and pricing are reviewed against the manufacturer’s current listing and re-checked whenever the lineup changes. Gas-detection guidance follows \u003ca href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1910\/1910.146\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA 1910.146\u003c\/a\u003e and \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA PELs\u003c\/a\u003e, cross-referenced with ACGIH TLVs.\n\u003c\/div\u003e\n\u003cdiv style=\"background:#2a2520;border-left:4px solid #ff9800;padding:16px 20px;margin:18px 0;color:#f5e6d3;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#ffb74d;\"\u003eDisclosure.\u003c\/strong\u003e WC Safety participates in the Amazon Associates Program and earns commissions on qualifying purchases through outbound links on this page (tag wcsafety04-20). We are not sponsored by any instrument manufacturer. This page is buyer guidance, not medical, legal or regulatory advice — confirm gas-detection requirements for your site against the applicable OSHA standard and, for commercial monitoring programs, a Certified Industrial Hygienist (CIH).\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"Product\", \"@id\": \"https:\/\/wcsafety.com\/products\/bw-gasalertclip-extreme-h2s-monitor#product\", \"name\": \"BW GasAlertClip Extreme H2S Monitor — 2-Year Disposable Single-Gas\", \"description\": \"BW GasAlertClip Extreme H2S monitor — 2-year disposable single-gas hydrogen sulfide clip, no sensor or battery service. Order at WC Safety.\", \"sku\": \"B00APKZWRG\", \"mpn\": \"GAXT-H2S\", \"image\": [\"https:\/\/wcsafety.com\/cdn\/shop\/products\/bw-gasalertclip-extreme-h2s-monitor.jpg\"], \"brand\": {\"@type\": \"Brand\", \"name\": \"Honeywell BW\"}, \"category\": \"Personal Gas Detector\", \"isPartOf\": {\"@type\": \"CollectionPage\", \"@id\": \"https:\/\/wcsafety.com\/collections\/personal-gas-detectors#collection\", \"name\": \"Personal \u0026 Wearable Gas Detectors\", \"url\": \"https:\/\/wcsafety.com\/collections\/personal-gas-detectors\"}, \"isRelatedTo\": [{\"@type\": \"Product\", \"name\": \"TopTes Guard-633 H2S Detector\", \"url\": \"https:\/\/wcsafety.com\/products\/toptes-guard-633-h2s-detector\"}, {\"@type\": \"Product\", \"name\": \"Honeywell BW Clip H2S Monitor (BWC2-H)\", \"url\": \"https:\/\/wcsafety.com\/products\/honeywell-bw-clip-h2s-monitor-bwc2-h\"}], \"offers\": {\"@type\": \"Offer\", \"url\": \"https:\/\/wcsafety.com\/products\/bw-gasalertclip-extreme-h2s-monitor\", \"priceCurrency\": \"USD\", \"price\": \"124.00\", \"availability\": \"https:\/\/schema.org\/InStock\", \"seller\": {\"@type\": \"Organization\", \"name\": \"WC Safety\"}}}, {\"@type\": \"BreadcrumbList\", \"@id\": \"https:\/\/wcsafety.com\/products\/bw-gasalertclip-extreme-h2s-monitor#breadcrumb\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/wcsafety.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Gas Detectors\", \"item\": \"https:\/\/wcsafety.com\/collections\/gas-detectors\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Personal \u0026 Wearable Gas Detectors\", \"item\": \"https:\/\/wcsafety.com\/collections\/personal-gas-detectors\"}, {\"@type\": \"ListItem\", \"position\": 4, \"name\": \"BW GasAlertClip Extreme H2S Monitor — 2-Year Disposable Single-Gas\"}]}, {\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What gas does the BW GasAlertClip Extreme detect?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hydrogen sulfide (H2S) only, with audible, visual and vibrating alarms. For several gases on one worker, use a 4-gas wearable.\"}}, {\"@type\": \"Question\", \"name\": \"How long does it last?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Two years from activation, then you replace the whole unit — it is a disposable design with no battery or sensor service in between.\"}}, {\"@type\": \"Question\", \"name\": \"How is it different from the BW Clip H2S?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Both are 2-year H2S clips; the BW Clip H2S is the current maintenance-free line, while the GasAlertClip Extreme is the established disposable model. Either covers the same H2S hazard.\"}}, {\"@type\": \"Question\", \"name\": \"Does it need docking or calibration?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No docking is required — it is set-and-forget. You should still bump-test with H2S gas before use to confirm response.\"}}, {\"@type\": \"Question\", \"name\": \"Where should it be worn?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"In the breathing zone, clipped to the collar or upper chest within about 12 inches of the nose and mouth.\"}}, {\"@type\": \"Question\", \"name\": \"Is it rechargeable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — it is a sealed 2-year disposable. For a rechargeable H2S clip, see the TopTes Guard-633.\"}}, {\"@type\": \"Question\", \"name\": \"What alarms does it have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Audible, visual and vibrating alarms trigger when H2S crosses the set point.\"}}, {\"@type\": \"Question\", \"name\": \"Can one unit cover a crew?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — issue one per worker. For area coverage use a Area \u0026 Transportable Gas Monitors monitor; for pre-entry a Portable Gas Detectors instrument.\"}}, {\"@type\": \"Question\", \"name\": \"Is it good for oil and gas?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — H2S clips are standard PPE in oil and gas, wellsite, refinery and wastewater work where H2S is the dominant hazard.\"}}, {\"@type\": \"Question\", \"name\": \"Is it in stock and how does it ship?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use the Amazon buy button for current availability and delivery timing through our fulfillment partner.\"}}, {\"@type\": \"Question\", \"name\": \"Does it detect anything besides H2S?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. For CO use the Carbon Monoxide Alarms \u0026 Detectors range; for multi-gas a 4-gas wearable in the Personal \u0026 Wearable Gas Detectors hub.\"}}, {\"@type\": \"Question\", \"name\": \"Do I still need pre-entry testing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — a personal clip supplements but does not replace pre-entry atmospheric testing with a Portable Gas Detectors instrument.\"}}]}, {\"@type\": \"Organization\", \"@id\": \"https:\/\/wcsafety.com\/#org\", \"name\": \"WC Safety\", \"url\": \"https:\/\/wcsafety.com\", \"logo\": \"https:\/\/wcsafety.com\/cdn\/shop\/files\/logo.png\"}, {\"@type\": \"Person\", \"@id\": \"https:\/\/wcsafety.com\/#editor\", \"name\": \"Steven Eaton\", \"jobTitle\": \"Editorial Lead\", \"worksFor\": {\"@id\": \"https:\/\/wcsafety.com\/#org\"}, \"knowsAbout\": [\"industrial gas detection\", \"atmospheric monitoring\", \"personal protective equipment\"]}, {\"@type\": \"Brand\", \"name\": \"Honeywell BW\"}]}\n\u003c\/script\u003e","brand":"Honeywell BW","offers":[{"title":"Default Title","offer_id":44266968121432,"sku":"B00APKZWRG","price":124.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/71nPCQpUbqL._SL1360.jpg?v=1782133291","url":"https:\/\/wcsafety.com\/products\/bw-gasalertclip-extreme-h2s-monitor","provider":"WC Safety","version":"1.0","type":"link"}