Plenom
Plenom A/S is a Danish hardware company that designs and sells the kuando Busylight family of USB and LoRaWAN presence-indicator devices for open offices, serving 1,000+ enterprise and SMB customers across 50+ countries through distributors, resellers, and direct channels.
- Company typePrivate
- Founded2008
- HeadquartersBrabrand, Denmark
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Plenom does
Plenom A/S is a Danish privately-held hardware company (founded 2008 in Hinnerup, Denmark; product line dates to 2003) that designs, manufactures, and distributes the kuando Busylight family of presence-indicator devices used in open-plan offices. The core product, kuando Busylight UC, is a USB HID device that connects to a PC and displays user availability status (available, in call, busy, do-not-disturb, away) via a multi-color 360-degree LED, while also functioning as an external ringer for softphone calls. The portfolio extends to a LoRaWAN Class C IoT variant (Busylight IoT) for workspace and facility management, a desk-phone/headset model (Busylight Combi), a sub-brand for EPOS headsets, and a no-software hot-desk timer light (Busylight Time Controller), with supporting software including kuandoHUB (multi-UC platform aggregator), kuando In-A-Call (microphone-based call detection), and development kits (SDKs for .NET, JavaScript, USB API, HTTP API, WebHID).
The technical foundation combines proprietary USB HID device firmware, LoRaWAN radio stack (CE/FCC/RCM/RoHS certified), and software integrations with 40+ UC platforms including Microsoft Teams, Zoom, Cisco Webex, RingCentral variants, Skype for Business, Slack, and 3CX, plus IoT platforms (Akenza, Flowscape, Spacewell, Zonifero, Sony TEOS). The business model is primarily one-time hardware sales with a thin overlay of premium software subscriptions (kuandoHUB, In-A-Call) and SDK/API licensing. Distribution is multi-channel: direct enterprise sales from Denmark and Boca Raton, FL; tier-1 distributors including Ingram Micro, EET Europarts, ScanSource, and ALSO; and a direct e-commerce storefront at shop.busylight.com. The customer base spans 1,000+ companies across enterprise and SMB segments in 50+ countries, with deal sizes ranging from 10 to 10,000 units and verticals spanning education, legal, financial services, government, engineering, technology, and energy.
Plenom firmographics
Firmographics- Name
- Plenom
- Legal name
- Plenom A/S
- Website
- https://plenom.com
- Company type
- Private
- Founded year
- 2008
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Plenom A/S is a Danish hardware company that designs and sells the kuando Busylight family of USB and LoRaWAN presence-indicator devices for open offices, serving 1,000+ enterprise and SMB customers across 50+ countries through distributors, resellers, and direct channels.
- Ownership category
- akta.pro rank
Plenom industry classification
Industry- Product category
- Office Presence Indicator Hardware
- NAICS
- Electric Lighting Equipment Manufacturing (3351), Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing (335132)
- SIC
- Computer & Office Equipment (3570), Computer Communications Equipment (3576)
- akta.pro primary industry
- Workplace Technology & Smart Office Support (Room Booking Systems, IT/AV Liaison) (IMAIALAK)
- akta.pro secondary industries
- Digital Experience Monitoring & Management (DEX/DEM, AIOps for EUC) (BPAEAIAF), Wearables & Consumer IoT Integration Platforms (BYOD) (HLACAFAF)
Keywords
Where Plenom is headquartered
LocationHeadquarters
- HQ city
- Brabrand
- HQ country
- Denmark
- HQ region
- Europe
Offices2 records
Markets served
Plenom business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Technology or R&D, Personnel, Marketing or Sales, Operations
Revenue model
- Hardware Sales - Busylight UC: Sale of USB presence indicator devices (Alpha, Omega designs) for unified communication environments. One-time hardware purchase with optional premium software.
- Hardware Sales - Busylight Combi: Sale of presence indicators for desk phones and headsets, targeting legacy phone systems without softphone integration.
- Hardware Sales - Busylight IoT LoRaWAN: Sale of IoT visual notifier devices for LoRaWAN networks for industrial, office, and facility management use cases.
- Hardware Sales - Busylight Time Controller: Sale of simple desk presence lights with timer functionality for shared workspace management. No subscription required.
- Premium Software Subscriptions: kuando Premium Software (kuandoHUB, In-A-Call) provides enhanced functionality for multiple platform support, manual controls, and advanced features.
- SDK and API Licensing: Licensing of development tools including SDK, USB API, HTTP API, JavaScript SDK for partners and developers to build custom integrations.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Busylight Time Controller - One-time purchase, no subscription |
| Subscription | Annual | kuandoHUB Premium Software - Platform prioritization and manual controls |
| Freemium | Annual | Platform-Specific Software - Teams, Zoom, Webex, etc. |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels6 records
Plenom product offering
Product offeringCore offering
Plenom designs, manufactures, and sells the kuando Busylight family of presence indicator devices and supporting software for open office and IoT workspace environments. The portfolio includes USB-connected LED indicator devices (Alpha and Omega) that display UC presence status and act as softphone ringers, LoRaWAN IoT visual notifiers for occupancy and industrial monitoring, desk-phone compatible devices (Combi, kuandoBOX), and the Time Controller for shared desks. Accompanying software (kuandoHUB, In-A-Call, Chrome Manual Changer) and SDKs/APIs enable integration with 40+ unified communications platforms and partner solutions.
Product overview
Plenom offers a portfolio of kuando presence indicator devices and management software for open office environments. The core offering is the kuando Busylight UC line, available in two hardware designs (Alpha compact and Omega larger format), which connects via USB to PCs and displays user availability status through multicolor LED lights while providing softphone call alerts. The kuando Busylight IoT variant uses LoRaWAN connectivity for IoT-based workspace management applications. Supporting the hardware, kuandoHUB software aggregates presence across multiple UC platforms simultaneously, while kuando In-A-Call uses microphone detection for platform-agnostic call status. Busylight Combi targets traditional desk phone environments. The portfolio includes development tools (SDKs for .NET, JavaScript, USB API, HTTP API, Browser Extension SDK, WebHID SDK) enabling custom integrations. The company invented the Busylight in 2003 and has sold globally since 2006, with products deployed in over 50 countries.
Differentiator
Problem solved
Functional benefit
Brands
- kuando Busylight UC: USB-connected presence indicator lights for open offices that display user availability status and serve as ringers for softphones
- kuando Busylight IoT
- kuando Busylight Time Controller
- kuando Busylight Combi
- kuando Busylight Alpha for EPOS SDW & DW
- kuandoHUB
- kuando In-A-Call
- Manual Changer for Google Chrome
Products and services
- kuando Busylight UC (Alpha and Omega) USB-powered presence indicator devices for unified communications environments, available in two designs (Alpha compact and Omega larger format). Displays user availability status via 360-degree multi-color LED light (in call, busy, do not disturb, away) and acts as a softphone ringer via built-in speaker with 8 ringtones. Integrates with 40+ UC platforms including Microsoft Teams, Zoom, Skype for Business, Cisco Webex, RingCentral, and Slack via USB HID device protocol.
- kuando Busylight IoT (LoRaWAN) LoRaWAN Class C IoT visual indicator device programmable via downlink to display any color, for occupancy, availability, and industrial monitoring applications. Certified for US (US902-928), Europe (EU863-870), and Australia (AU915-928), with CE, FCC, RCM, and RoHS certification. Used for meeting room occupancy, desk availability, cold storage temperature monitoring, production line alerts, warehouse bin status, and air quality indicators.
- kuando Busylight Combi Presence indicator device for traditional desk phones and headsets, supporting wired and wireless headsets with bases (not Bluetooth). Compatible with approximately 90% of desk phones. Uses red for active calls and blue for Do Not Disturb mode. No software required; connects between headset cord and telephone.
- kuando Busylight Time Controller Hardware-only desk presence light showing desk availability via timer (1-9 hours). Red light indicates desk in use; automatically turns off when time expires. No software or subscription required. Priced at $89.95 per desk. Plug-in power operation for shared workspace desk management.
- kuando Busylight Alpha for EPOS SDW & DW Dedicated presence indicator designed as replacement for the discontinued EPOS (formerly Sennheiser) IMPACT SDW UI 10 BL busylight. Displays red (in call), green (available), and yellow (away) via EPOS headset status. Developed in collaboration with EPOS for the IMPACT SDW and DW series headsets.
- kuandoBOX Presence indicator device bridging traditional desk phones and unified communications. Connects to both desk phone and PC for dual-mode operation with softphone integration support.
- kuandoHUB Premium Software Multi-UC platform management software for Windows and macOS that aggregates presence status from multiple UC platforms simultaneously. Features include platform prioritization, manual color and sound controls, kuandoTIMER for Pomodoro technique, Outlook calendar integration, hotkey controls, and HTTP/API interface for third-party integrations. Available as a paid premium add-on.
- kuando In-A-Call Platform-independent software using microphone activity detection to determine call status. Shows red when microphone is active (on call) and green when inactive. Works with any communication platform without dedicated integration. Available for Windows and macOS.
- Manual Changer for Chrome Browser-based manual presence control accessed via web app (web-busylight.plenom.com). No software installation required; works in Google Chrome on Windows and macOS. Allows users to manually change Busylight colors to show availability status.
- Plenom Development SDKs and APIs Developer toolkit for partners and integrators, including SDK for .NET developers (C++, C#, Visual Basic), USB API for low-level hardware control at USB protocol level, HTTP API for Windows and Mac, JavaScript SDK, Browser Extension SDK for Chrome and Chromium-based browsers, and Chromium WebHID SDK for direct WebHID browser communication without native middleware. Licensing of these tools is offered to partners and OEMs.
- Busylight WorkSpaces IoT-based workspace management solution for meeting rooms and flexible spaces using LoRaWAN-connected Busylight IoT devices with PIR motion sensors. Integrates with Microsoft 365 for room booking status display. Supports up to 3 Busylights per space with configurable grace time (default 5 minutes). Uses LoRaWAN gateways from Tektelic, Kerlink, and Browan.
Quantifiable outcome
- 15% of employees cite distraction by colleagues as a drain on productivity - Busylight addresses this directly
- +1 more outcomes
Companies that use Plenom
Customer profileNamed customers7 records
Segments4 records
Ideal customer profiles4 records
Plenom technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration105 records
Feature8 records
Plenom partnerships and signals
Strategic signalPartnerships
13 partnerships are on record, tiered core and major.
- MicrosoftcoreDeep integration partnership with Microsoft for Teams, Skype for Business, and Microsoft 365. kuando Busylight provides presence indicators and call notifications for Microsoft UC environments.
- CiscocoreIntegration with Cisco Webex, Cisco Jabber, and Cisco contact center solutions. Busylight provides presence and call alerts for Cisco UC environments.
- ZoomcoreNative integration with Zoom platform for presence indicators and call notifications.
- RingCentralcoreIntegration with RingCentral unified communications and contact center platforms.
- LoRa AlliancecoreMember of LoRa Alliance for IoT Busylight LoRaWAN product development and standards compliance.
- EPOScoreDedicated Busylight product for EPOS IMPACT SDW series headsets, developed as replacement for discontinued Sennheiser UI 10 BL.
- SlackcoreIntegration with Slack workspace communications for presence indicators.
- 3CXcoreIntegration with 3CX IP PBX platforms for presence and call notifications.
- Ingram MicromajorGlobal technology distributor offering Busylight UC and Combi products through Ingram Micro's extensive channel network.
- EET EuropartsmajorPan-European distributor with presence in 40+ countries offering Busylight UC, Combi, and IoT products.
- ScanSourcemajorUS and Canada focused distributor for Busylight UC, KuandoBOX, and Combi products.
- ALSOmajorEuropean distributor covering Nordic countries (Denmark, Finland, Sweden, Norway) and Germany.
- Globe Systems A/ScoreSister company and award-winning headset specialist reseller covering Northern Europe. Established 1999.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
Plenom competitors and assessment
Company assessmentBroad incumbents
- Yealink: Yealink is a broad UC hardware vendor offering headsets, desk phones, and video devices with built-in presence/LED indicators; it competes with Plenom's standalone presence indicators while also offering a much wider UC peripherals portfolio.
- Logitech: Logitech's UC headsets (Zone, Rally) and peripherals embed busy-light features integrated with major UC platforms, offering enterprise buyers an alternative to standalone Busylight devices as part of a much broader hardware ecosystem.
- Microsoft: Microsoft Teams already displays presence natively and supports third-party presence peripherals via APIs; as the dominant UC platform, it can compress third-party demand for hardware indicators like Plenom's or certify its own.
- Cisco: Cisco Webex and Cisco Jabber provide native presence and call notifications plus integrations with third-party indicators; as a platform owner and UC hardware vendor, Cisco is a broader incumbent overlapping Plenom's presence-signaling use case.
Direct peers
- Poly (HP): Poly (formerly Plantronics + Polycom) ships UC headsets with integrated busy-light indicators that signal Teams, Zoom, and Webex presence, directly competing with Plenom for the same unified-communications buyer budget.
- Jabra (GN Audio): Jabra professional headsets (Evolve, Engage, Biz) include built-in busy-light LEDs driven by presence from Teams, Zoom, and other UC platforms, offering customers an alternative way to achieve the same office presence signaling that Plenom sells as a standalone accessory.
- Embrava (Blynclight): Embrava sells Blynclight USB and Bluetooth presence indicators that show UC presence and ring softphones, serving the same open-office and call-center use cases as kuando Busylight with comparable Teams/Zoom/Cisco integrations.
- Luxafor: Luxafor manufactures USB and Bluetooth LED presence indicators (Luxafor Flag, BusyLight, Orb) that integrate with Microsoft Teams, Zoom, Skype for Business, and other UC platforms, directly competing with kuando Busylight UC for the same open-office buyer.
- EPOS: EPOS (formerly Sennheiser Communications) sells IMPACT SDW and DW headsets with built-in busy-light LEDs and is also a Plenom OEM partner; its headsets compete with standalone Busylight devices for presence-signaling budgets in contact centers and enterprises.
Emerging players
- Flowscape: Flowscape is a workspace management platform for desk and room booking that integrates with Plenom's LoRaWAN Busylight IoT for occupancy visualization, overlapping with Plenom's IoT presence use case in smart-office deployments.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Plenom social profiles
Digital presencePlenom compliance and trust
Trust signalCompliance5 records
Plenom financial estimates
Financial estimateRevenue estimate
Valuation estimate
Plenom leadership team
Management profileNumber of profiles
Profiles7 records
Plenom funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Plenom M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Plenom
What does Plenom do?
Plenom designs, manufactures, and sells the kuando Busylight family of presence indicator devices and supporting software for open office and IoT workspace environments. The portfolio includes USB-connected LED indicator devices (Alpha and Omega) that display UC presence status and act as softphone ringers, LoRaWAN IoT visual notifiers for occupancy and industrial monitoring, desk-phone compatible devices (Combi, kuandoBOX), and the Time Controller for shared desks. Accompanying software (kuandoHUB, In-A-Call, Chrome Manual Changer) and SDKs/APIs enable integration with 40+ unified communications platforms and partner solutions.
Is Plenom a public or private company?
Plenom is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Plenom founded?
Plenom was founded in 2008. It employs 11 to 50 people.
Where is Plenom based?
Plenom is headquartered in Brabrand, Denmark, in the Europe region.
How does Plenom make money?
Six revenue lines are on record. Hardware Sales - Busylight UC is the primary driver. The others are hardware Sales - Busylight Combi, hardware Sales - Busylight IoT LoRaWAN, hardware Sales - Busylight Time Controller, premium Software Subscriptions and SDK and API Licensing.
Who are Plenom's main competitors?
Broad incumbents on record are Yealink, Logitech, Microsoft and Cisco. Direct peers are Poly (HP), Jabra (GN Audio), Embrava (Blynclight), Luxafor and EPOS. Flowscape is listed as an emerging player.
Does Plenom have an API?
Yes. Multiple SDKs and APIs are offered: (1) SDK for Busylight UC enables .NET developers to use C++, C#, or Visual Basic to create applications. (2) USB API provides low-level hardware control at USB protocol level. (3) HTTP API for Windows and Mac controls Busylight via HTTP requests. (4) Browser Extension SDK builds browser extensions for presence awareness with Chrome and Chromium-based browsers. (5) JavaScript SDK integrates Busylight control into web applications. (6) Chromium WebHID SDK communicates directly with Busylight devices via WebHID API without native middleware. All developer tools require requesting access via form. Developer documentation is at www.plenom.com/support/development.
What industry is Plenom in?
Plenom's product category is Office Presence Indicator Hardware. Its primary akta.pro industry code is IMAIALAK, Workplace Technology & Smart Office Support (Room Booking Systems, IT/AV Liaison), with a secondary code of BPAEAIAF, Digital Experience Monitoring & Management (DEX/DEM, AIOps for EUC). Its NAICS code is 3351 and its SIC code is 3570.