Bluetooth Low Energy VS RS-232
As of 30 October 2026, RS-232 is named by 342 companies and Bluetooth Low Energy by 359; Bluetooth Low Energy skews to companies under 200 people (51% vs 39%), RS-232 to companies over 1,000 (38% vs 28%).
As of 30 October 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: Bluetooth Low Energy's script and mail records show on hundreds of thousands of small sites, RS-232 rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Bluetooth Low Energy: 2–200 employees
- 51%
- RS-232: 2–200 employees
- 39%
- Bluetooth Low Energy: 1,000+ employees
- 28%
- RS-232: 1,000+ employees
- 38%
- Postings per company, 90 days
- 2.2 · 2.6
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | Bluetooth Low Energy | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 7 | 2% | 1 | 0% | even |
| 2-10 employees | 24 | 7% | 13 | 4% | Bluetooth Low Energy |
| 11-50 employees | 69 | 19% | 49 | 14% | Bluetooth Low Energy |
| 51-200 employees | 89 | 25% | 71 | 21% | Bluetooth Low Energy |
| 201-500 employees | 44 | 12% | 46 | 13% | even |
| 501-1000 employees | 25 | 7% | 31 | 9% | RS-232 |
| 1001-5000 employees | 38 | 11% | 51 | 15% | RS-232 |
| 5001-10000 employees | 21 | 6% | 20 | 6% | even |
| 10,001+ employees | 42 | 12% | 60 | 18% | RS-232 |
| Segment | Bluetooth Low Energy | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 133 | 37% | 53 | 15% | Bluetooth Low Energy |
| Manufacturing & industry | 117 | 33% | 180 | 53% | RS-232 |
| Business & finance services | 33 | 9% | 33 | 10% | even |
| Commerce & trade | 19 | 5% | 7 | 2% | Bluetooth Low Energy |
| Consumer services & leisure | 11 | 3% | 5 | 1% | even |
| Automotive | 8 | 2% | 16 | 5% | RS-232 |
| Media & content | 8 | 2% | 5 | 1% | even |
| Property & construction | 8 | 2% | 13 | 4% | even |
| Health care | 7 | 2% | 2 | 1% | even |
| Utilities & infrastructure | 6 | 2% | 12 | 4% | even |
| Public, community & associations | 5 | 1% | 7 | 2% | even |
| Transport, logistics & rental | 2 | 1% | 7 | 2% | even |
| Segment | Bluetooth Low Energy | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| United States | 187 | 52% | 210 | 61% | RS-232 |
| United Kingdom | 24 | 7% | 21 | 6% | even |
| Germany | 23 | 6% | 21 | 6% | even |
| India | 17 | 5% | 17 | 5% | even |
| France | 12 | 3% | 11 | 3% | even |
| Canada | 11 | 3% | 11 | 3% | even |
| Poland | 10 | 3% | 5 | 1% | even |
| Switzerland | 8 | 2% | – | – | outside top 12 |
| Australia | 7 | 2% | – | – | outside top 12 |
| Sweden | 6 | 2% | 4 | 1% | even |
| Netherlands | 5 | 1% | – | – | outside top 12 |
| Singapore | 5 | 1% | 6 | 2% | even |
| Italy | – | – | 8 | 2% | outside top 12 |
| Spain | – | – | 4 | 1% | outside top 12 |
| United Arab Emirates | – | – | 3 | 1% | outside top 12 |
| Segment | Bluetooth Low Energy | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 698 | 64% | 431 | 36% | Bluetooth Low Energy |
| Engineering (non-software) | 190 | 17% | 560 | 47% | RS-232 |
| IT operations & business systems | 38 | 3% | 15 | 1% | Bluetooth Low Energy |
| Product, program & project management | 30 | 3% | 4 | 0% | Bluetooth Low Energy |
| Sales | 22 | 2% | 4 | 0% | even |
| Marketing & communications | 8 | 1% | – | – | outside top 12 |
| Unclassified | 5 | 0% | – | – | outside top 12 |
| Data & AI | 3 | 0% | – | – | outside top 12 |
| Quality, safety & environment | 3 | 0% | 5 | 0% | even |
| Research and science | 2 | 0% | – | – | outside top 12 |
| Skilled trades and field service | 2 | 0% | 60 | 5% | RS-232 |
| Arts media and entertainment | 1 | 0% | 2 | 0% | even |
| Customer service & success | – | – | 7 | 1% | outside top 12 |
| Logistics warehouse and transport | – | – | 2 | 0% | outside top 12 |
| Manufacturing and production | – | – | 2 | 0% | outside top 12 |
| Construction and civil | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Bluetooth Low Energy →
Companies using RS-232 →
iot platforms protocols ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
RS-232 is named by 342 companies in job postings and Bluetooth Low Energy by 359; 18 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/bluetooth-low-energy-vs-rs-232)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
Bluetooth Low Energy vs RS-232: questions
Which is more used, Bluetooth Low Energy or RS-232?
By companies naming it in their own job postings, Bluetooth Low Energy (359) over RS-232 (342). By website-and-DNS footprint, RS-232 (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Bluetooth Low Energy?
51% of Bluetooth Low Energy companies have 2 to 200 employees, against 39% for RS-232. 28% of Bluetooth Low Energy companies have over 1,000 employees, against 38% for RS-232.
Do companies run both?
18 companies name both in their postings, usually Bluetooth Low Energy in marketing and RS-232 in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
Get either list your way
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Every company on either tool,
with the person who owns it
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