Welch Al: GS777 Wall Transformer Recall - Risk of Electrical Shock
Welch Allyn recalls GS777 Wall Transformer model 77710 due to potential fluid ingress causing electrical short and shock risk. Affected units sold in ambulatory and acute care settings.
Use caution until it’s fixed
Potential Risk of fluid ingress to the power supplies, resulting in risk of an internal electrical short and possible electrical shock
Contact the company
What happened, in plain English
Welch Allyn is recalling their GS777 Wall Transformer model 77710 because water or other fluids could enter the device, causing electrical shorts and shock. This poses a risk to users in medical settings where the device is used. Read more at govinfonow.com/recall/62744-welch-al-gs777-wall-transformer-recall-risk-of-electrical-shock.
Source Summary by GovInfoNow · govinfonow.com/recall/62744-welch-al-gs777-wall-transformer-recall-risk-of-electrical-shock · Updated August 19, 2026 · FDA enforcement record: FDA #Z-1672-2021
Cite this page
“Welch Al: GS777 Wall Transformer Recall - Risk of Electrical Shock.” GovInfoNow, updated August 19, 2026. https://govinfonow.com/recall/62744-welch-al-gs777-wall-transformer-recall-risk-of-electrical-shock. Based on FDA recall #Z-1672-2021 (https://api.fda.gov/device/enforcement.json?search=recall_number:%22Z-1672-2021%22&limit=1).
Why it’s dangerous
Fluids entering the power supply could cause internal electrical shorts, which may lead to electrical shock. This is particularly concerning in medical environments where devices are exposed to moisture or humidity.
Who’s affected
Healthcare workers and patients using the GS777 Wall Transformer in ambulatory or acute care settings are most at risk. The device is designed for medical use in hospitals and clinics.
How to tell if you have this one
Check for the model number 77710 on the GS777 Wall Transformer. The device is intended for use in ambulatory and acute care settings, so it's likely found in hospitals and clinics.
- Brand
Welch Allyn- Category
Medical device
All 2 products in this recall
FDA lists each product line separately under one recall event. Check your product description, lot or code numbers against each row. Every row shares the hazard and remedy on this page.
- Classification
Class II- Status
Terminated- Distribution
Worldwide - US Nationwide distribution Foreign: Afghanistan Albania Algeria American Samoa Argentina Australia Austria Azerbaijan Bahamas (the) Bahrain Bangladesh Barbados Belgium Bermuda Bhutan Bolivia (Plurinational State of) Botswana Brazil Brunei Darussalam Bulgaria Cameroon Canada Chad Chile China Colombia Congo (the Democratic Republic of the) Congo (the) Costa Rica Croatia Cyprus Czechia Denmark Dominican Republic (the) Ecuador Egypt El Salvador Estonia Eswatini Finland France French Polynesia Georgia Germany Ghana Greece Guam Guatemala Honduras Hong Kong Hungary Iceland India Indonesia Iran (Islamic Republic of) Iraq Ireland Israel Italy Jamaica Japan Jordan Kenya Korea (the Republic of) Kuwait Lao People's Democratic Republic (the) Latvia Lebanon Lesotho Libya Luxembourg Malaysia Maldives Malta Mexico Mozambique Myanmar Namibia Nepal Netherlands (the) New Zealand Nicaragua Nigeria Northern Mariana Islands (the) Norway Oman Pakistan Panama Paraguay Peru Philippines (the) Poland Portugal Puerto Rico Qatar R¿union Romania Russian Federation (the) Saudi Arabia Senegal Serbia Singapore Slovenia South Africa Spain Sri Lanka Sweden Switzerland Taiwan (Province of China) Thailand Trinidad and Tobago Tunisia Turkey Uganda Ukraine United Arab Emirates (the) United Kingdom Venezuela (Bolivarian Republic of) Viet Nam
| Recall number | Product, codes & lots | Quantity |
|---|---|---|
| Z-1672-2021 | GS777 Wall Transformer Model: 77710 Intended Use: The GS777 Wall Transformer is intended for use in ambulatory and acute care settings.; All serial numbers | 789682 |
| Z-1673-2021 | ProBP 3400 Digital Blood Pressure Device ((handheld, desk mount, wall mount models) Model: 34XFHT-B Intended: ProBP 3400 automatically measures systolic and diastolic pressure (excluding neonates) and pulse rate, as well as calculates Mean Arterial Pressure (MAP).; All serial numbers | 119770 units |
What to do — step by step
Check for Fluid Damage
Inspect the transformer for signs of water or fluid exposure, such as discoloration or unusual smells.
Contact Manufacturer
Reach out to Welch Allyn directly for guidance on whether the device needs repair or replacement.
Where it went and when
Where it was distributed
Distributed nationwide, and outside the U.S.
FDA distribution: “Worldwide - US Nationwide distribution Foreign: Afghanistan Albania Algeria American Samoa Argentina Australia Austria Azerbaijan Bahamas (the) Bahrain Bangladesh Barbados Belgium Bermuda Bhutan Bolivia (Plurinational State of) Botswana…” States read from FDA’s own wording; “not listed” means the notice does not name it.
Distributed nationwide, and outside the U.S.
Recall timeline
FDA terminated this recall 3.1 years after the firm started it.
- Firm started the recall
- FDA classified it Class II
- Published in FDA’s Enforcement Report
- FDA terminated the recall
Dates from the agency record only; steps without a date are left out.
Similar recalls
Latest medical device recalls
Keep exploring
Where this comes from
The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
- Official source: FDA Recall #Z-1672-2021 (April 22, 2021) — FDA publishes no per-recall page; this is the official machine-readable enforcement record. Search FDA recalls for Z-1672-2021 to see it in context.
- Plain-language summary written by qwen3:4b on August 19, 2026, from the official record above. Not reviewed by a person — if it conflicts with the FDA notice, the notice is correct. Report an error on this page.
- GovInfoNow is an independent service and is not a government agency. We republish official FDA recall data; we don’t issue, amend or administer recalls.