Eltek Data Loggers
Eltek Data Loggers is a UK-based environmental monitoring company, founded 1985 and part of Grant Instruments, that designs and manufactures wired and wireless sensors, hubs, alarms and the Darca Command cloud platform for museums, life sciences, industrial and built environment customers worldwide.
- Company typePrivate
- Founded1985
- HeadquartersCambridge, United States
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Eltek Data Loggers does
Eltek Data Loggers, trading as Eltek Ltd, is a UK-based environmental monitoring company founded in 1985 and headquartered in Royston near Cambridge, where it designs and manufactures its products. It operates as a subsidiary of the Grant Instruments scientific instruments group, with the business structured around the Darca Solutions Suite, a three-layer platform comprising Darca Collect (sensing via wired PT resistance probes, SQ16Plus multi-channel loggers and GenII wireless transmitters and repeaters operating on licence-free UHF), Darca Connect (connectivity via SRV450 4G receiver hubs and SMS450 multi-stage alarm units, plus the Eltek Bridge for legacy integration), and Darca Command (cloud-based dashboards, real-time alarms, compliance-ready reporting, audit trails and multi-user access). The company reports an installed base of more than 40,000 GenII wireless transmitters across demanding sites such as the Natural History Museum, Canterbury Cathedral, Westminster Abbey, Trinity College Dublin, GSK, Unilever, ExxonMobil, Aramco, Ocado, Formula 1 and the UK Parliament.
Eltek serves four primary verticals: Museums & Heritage, Life Sciences (labs, biobanks, IVF and cold chain), Manufacturing & Industrial, and the Built Environment. Its revenue model is a mix of hardware sales (transmitters, loggers, probes, hubs, repeaters and alarms), recurring software subscriptions (Darca Command cloud), and professional services including installation, commissioning, training, calibration and UKAS-traceable calibration certification. Pricing is custom and quote-based, typically under multi-year contracts, and the GTM motion combines direct UK field sales by UK-based engineers with an international distribution network of appointed specialist partners across 27+ territories in Europe, the Middle East, Africa, Asia-Pacific and the Americas, including heritage-sector partners such as D-Tech in the UK. The company is ISO 9001:2015 and Cyber Essentials certified and is designed to meet GxP, GMP, HTA, ISO and 21 CFR Part 11 compliance requirements.
Most recent strategic activity centers on the July 2026 launch of the Darca Solutions Suite, accompanied by appointments of a new Operations Lead (Charlie Smith) and a Technical Service and Sales Support specialist (Alice Oliver), the release of an iOS Darca Wired mobile app, and continued co-development of the AQ110 and AQ112 air quality monitors with UCL under the EPSRC-funded TOP Project. Marketing is content-led via case studies, an insights library, newsletter and SEO, with lead capture through live chat and enquiry forms routed to UK engineers. The company is privately held, does not disclose revenue, and has no public funding history.
Eltek Data Loggers firmographics
Firmographics- Name
- Eltek Data Loggers
- Legal name
- Eltek Ltd
- Website
- https://eltekdataloggers.co.uk
- Company type
- Private
- Founded year
- 1985
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Eltek Data Loggers is a UK-based environmental monitoring company, founded 1985 and part of Grant Instruments, that designs and manufactures wired and wireless sensors, hubs, alarms and the Darca Command cloud platform for museums, life sciences, industrial and built environment customers worldwide.
- Ownership category
- akta.pro rank
Eltek Data Loggers industry classification
Industry- Product category
- Environmental Monitoring Systems
- NAICS
- Other Measuring and Controlling Device Manufacturing (334519), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)
- SIC
- Measuring & Controlling Devices, Nec (3829), Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Multi-sensor condition monitoring tags (temp+humidity+shock+location) (TLAEALAI)
- akta.pro secondary industries
- Humidity & dew point monitoring sensors (TLAEALAB), Cold storage facility environmental sensing (rooms, freezers, blast chillers) (TLAEALAL), Cold Chain Monitoring, Sensors & Control Towers (IoT, data loggers) (HLAGAMAG)
Keywords
Where Eltek Data Loggers is headquartered
LocationHeadquarters
- HQ city
- Cambridge
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Eltek Data Loggers business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Hardware Sales: Sale of wireless transmitters, wired loggers, sensors, probes, hubs, repeaters, and accessories. Hardware forms the core product portfolio including GenII wireless system, SQ16Plus wired loggers, SRV450 hubs, SMS450 alarms.
- Software Subscriptions: Darca Command cloud platform provides dashboards, alarms, and compliance reporting as a subscription service. Darca Connect and Command software tiers offer real-time monitoring, automated alerts, and secure audit trails.
- Professional Services: Installation, commissioning, training, calibration services, and ongoing technical support. UK-based field-service engineers provide system design, installation advice, and long-term support.
- Calibration Services: UKAS-traceable calibration services with calibration certificates for sensors and monitoring equipment, supporting compliance and audit requirements.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom quotation-based pricing |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
Eltek Data Loggers product offering
Product offeringCore offering
Eltek designs, manufactures and sells wired and wireless environmental monitoring hardware (GenII UHF transmitters, SQ16Plus multi-channel loggers, SRV450 hubs, SMS450 alarms, AQ110/AQ112 air-quality monitors, repeaters, probes and sensors) alongside the Darca Command cloud software platform. The integrated Darca Solutions Suite provides continuous, gap-free monitoring of temperature, humidity, CO2, light/UV, particulates, differential pressure, water leaks and tilt for organisations in museums and heritage, life sciences, manufacturing/industrial and built environment applications.
Product overview
Eltek Data Loggers is a UK-based environmental monitoring company (est. 1985, part of Grant Instruments) offering a unified platform-plus-modules product architecture centered on the Darca Solutions Suite. The suite has three layers: Darca Collect (sensing — wired PT resistance probes via SQ16Plus logger, and GenII wireless transmitters/repeaters for temperature, humidity, CO2, light, differential pressure, water leaks, tilt, and pulse inputs), Darca Connect (connectivity — SRV450 receiver hubs with 4G mobile data, SMS450 alarm units, and the Eltek Bridge BRI-250 for legacy integration), and Darca Command (cloud software — live dashboards, real-time alarms, compliance-ready reporting, audit trails, and multi-user access). The platform serves four application areas: Museums & Heritage, Life Sciences (labs, biobanks, IVF), Manufacturing & Industrial, and Built Environment. Supporting products include the AQ110/AQ112 co-developed air-quality monitors with UCL, the RX250SH industrial logger for composting compliance, and the Darca Wired Mobile App for iOS. Products are distributed through direct UK sales and a network of appointed distributors across more than 27 territories.
Differentiator
Problem solved
Functional benefit
Brands
- Darca Solutions Suite: One connected monitoring platform comprising Darca Collect (sensing layer), Darca Connect (connectivity layer), and Darca Command (cloud monitoring platform).
- Darca Collect
- Darca Connect
- Darca Command
- Darca Heritage
- Darca Wired
- Eltek Bridge (BRI-250)
Products and services
- Darca Solutions Suite One connected environmental monitoring platform comprising three layers - Darca Collect (wired PT probes and wireless GenII transmitters/repeaters for sensing), Darca Connect (SRV450 hubs and SMS450 alarms for connectivity), and Darca Command (cloud dashboards, real-time alarms and compliance-ready reporting). Sold to museums, life sciences, manufacturing and built environment organisations requiring continuous, gap-free monitoring.
- Darca Wired (SQ16Plus) Multi-channel wired data logger supporting 3-wire and 4-wire PT resistance probes for high-accuracy temperature measurement in fixed indoor environments such as laboratories, museums, and industrial facilities. Fully integrated with the wireless range and Darca Command cloud platform.
- GenII Wireless System Battery-powered wireless transmitter system operating on a licence-free UHF radio band, transmitting environmental readings at configurable intervals (e.g. 10-second logging) with ranges up to 1 km, supported by repeaters for mesh-style coverage across large and complex sites. Includes transmitter models for temperature, humidity, light/UV, CO2, differential pressure, water leaks, tilt and pulse inputs.
- SRV450 Receiver Hub Hub that gathers data from the wireless monitoring network and relays it securely to the Darca Command cloud, featuring 4G mobile connectivity for reliable data transmission across large or distributed sites.
- SMS450 Alarm Unit Alarm unit that turns threshold breaches into instant SMS alerts, providing multi-stage email and SMS alarm escalation to ensure the right person is notified immediately when conditions drift out of range.
- Eltek Bridge (BRI-250) Twin-antenna wireless receiver that brings legacy Eltek transmitters into the current Darca monitoring setup, extending rather than replacing existing installations and allowing new transmitters to be added to the same network while layering Darca Command on top.
- Darca Command Cloud Platform Cloud-based software layer of the Darca Solutions Suite providing live dashboards, real-time alarms, automated notifications, compliance-ready reporting, historical trends, audit trails and secure multi-user access. Accessible from any web browser, scaling from a single building to hundreds of locations.
- Darca Heritage Specialized variant of the Darca cloud platform configured for heritage environments, dividing monitored sites into zones for each user group, calculating derived parameters such as absolute humidity and dewpoint, and managing multiple sites such as the London and Cosford sites of the RAF Museum in one package.
- AQ110 / AQ112 Air Quality Monitors Co-developed with UCL Institute of Environmental Design & Engineering under an EPSRC-funded project. The AQ110 captures temperature, humidity, CO2, particulates (PM1, PM2.5, PM10), NO2, CO and TVOCs in a single unit; the AQ112 adds ozone sensing for richer outdoor air-quality measurement. Used for indoor and outdoor air-quality research.
- RX250SH Industrial Data Logger Rugged data logger used in industrial composting applications, storing up to 245,000 readings with full battery backup and supporting stainless-steel lance probes with accuracy of plus or minus 0.1 degrees C for regulatory-grade kill-phase temperature compliance.
- RP250-USB Wireless Repeater Mains-powered wireless repeater with rechargeable battery backup and a detachable antenna, used to extend and re-route radio coverage around thick walls, floors, metal structures and other obstacles in large or complex sites.
- SRV250 Gateway Data Logger Gateway data logger that transmits wireless readings over 3G mobile data, enabling remote monitoring of touring exhibitions and distributed sites. Configured before shipment for plug-and-play deployment at remote venues.
- Darca Wired Mobile App iOS application for connecting to SQ16Plus loggers over Bluetooth, providing alarms, settings adjustment and live readings from an iPhone or iPad.
- UKAS-traceable Calibration Services UKAS-traceable calibration services with calibration certificates for sensors and monitoring equipment, supporting compliance and audit requirements. Provided by Eltek as an add-on service to monitoring deployments.
- Installation, Commissioning and Training Services Professional services delivered by UK-based field engineers covering solutions-led advice, system design, installation, commissioning, training, and long-term technical support for Eltek monitoring deployments.
Quantifiable outcome
- Continuous logging with no data gaps even during network interruptions
- +3 more outcomes
Companies that use Eltek Data Loggers
Customer profileNamed customers34 records
Segments4 records
Ideal customer profiles4 records
Eltek Data Loggers technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature9 records
Eltek Data Loggers partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core and strategic.
- TectracoreAppointed distributor for Czech Republic, Hungary, Croatia, Slovakia, Slovenia covering Central and Eastern European markets.
- D-TechcoreUK specialist distributor for museums and heritage sector. Partnered with multiple museum customers including Trinity College Dublin, RAF Museum, and Carmarthenshire County Council for system design and installation.
- Driesen+KerncoreAppointed distributor for Germany, serving the German market with Eltek monitoring solutions.
- AcquisyscoreAppointed distributor for France.
- Medical Supply Co LtdcoreAppointed distributor for Ireland.
- Computer Aided SolutionscoreAppointed distributor for USA, trading as Data Logger Inc, providing North American sales and support.
- Strasser TyrolcoreAppointed distributor for Austria.
- Connected IoTcoreAppointed distributor for Australia and New Zealand.
- Tobit Curteis AssociatescoreHistoric buildings specialist practice working with Eltek on Canterbury Cathedral and St Paul's Cathedral monitoring. Specialises in investigation and control of environmental deterioration in historic buildings.
- UCL Institute of Environmental Design & EngineeringstrategicLong-term collaboration to co-develop AQ110/AQ112 air quality monitors under EPSRC-funded TOP Project. Monitors measure temperature, humidity, CO2, particulates, NO2, CO, TVOCs and ozone for research across homes, hospitals, offices and schools.
- HubSpotcoreCRM and analytics provider where enquiries are stored and managed. Also provides visitor analytics and live chat widget. Data processor under data-processing agreement.
- Grant InstrumentsstrategicParent company - a respected UK scientific instruments group providing scale and stability. Eltek is part of Grant Instruments combining decades of UK engineering heritage with the resources of a scientific instruments group.
Scale indicators6 records
Recent moves7 records
Expansion highlights5 records
Eltek Data Loggers competitors and assessment
Company assessmentDirect peers
- Vaisala: Vaisala is a global leader in environmental and industrial measurement, offering humidity, temperature, CO2 and dewpoint sensors, data loggers and continuous monitoring systems for life sciences, museums and industrial applications — the closest direct competitor to Eltek across both hardware and cloud software.
- Rotronic (Process Sensing Technologies): Rotronic (now part of Process Sensing Technologies) manufactures high-accuracy humidity and temperature probes, data loggers, and continuous monitoring systems targeted at pharmaceutical, food, and museum/archive applications — a direct competitor in the same measurement and compliance niches.
- Hanwell Solutions: Hanwell Solutions is a UK-headquartered peer offering wireless environmental monitoring systems for museums, galleries, laboratories and industrial facilities — overlapping directly with Eltek's heritage and life-sciences verticals, including temperature, humidity, and light monitoring.
- Dickson (Dickson Data): Dickson manufactures data loggers and environmental monitoring solutions for temperature, humidity and pressure across pharmaceutical, food service, museums and industrial customers — a direct competitor in regulated continuous monitoring.
- Onset Computer Corporation (HOBO): Onset's HOBO product line provides USB and wireless data loggers for temperature, humidity, CO2 and other environmental variables across research, building performance and industrial applications — a direct peer in the data-logger category.
- Comet System (COMET): Comet System manufactures temperature, humidity, CO2, atmospheric pressure and other environmental sensors and data loggers with cloud monitoring software for industrial, life sciences and building applications — comparable wireless/cloud monitoring architecture.
- Sensitech (Carrier): Sensitech, part of Carrier, provides cold chain visibility solutions including temperature monitors, data loggers and cloud analytics for pharmaceutical, food and industrial supply chains — overlapping with Eltek's life-sciences cold-chain offering.
- Lascar Electronics: Lascar Electronics is a UK-based manufacturer of standalone data loggers, panel meters and wireless monitoring products for temperature, humidity and voltage — a direct peer in the small-footprint data-logger market.
Broad incumbents
- testo (Testo SE & Co. KGaA): Testo is a global broad-line measurement instruments incumbent offering temperature, humidity and air-quality loggers alongside analyzers and thermal imaging — overlapping with Eltek but as part of a much wider product portfolio rather than a specialist.
Emerging players
- Cloudleaf / FourKites: FourKites (and similar supply-chain visibility platforms) provide cloud-native cold-chain and environmental monitoring with IoT sensors and dashboards — an emerging software-led alternative to traditional data-logger approaches in regulated supply chains.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Eltek Data Loggers social profiles
Digital presenceEltek Data Loggers compliance and trust
Trust signalCompliance2 records
Eltek Data Loggers financial estimates
Financial estimateRevenue estimate
Valuation estimate
Eltek Data Loggers leadership team
Management profileNumber of profiles
Profiles2 records
Eltek Data Loggers funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Eltek Data Loggers 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 Eltek Data Loggers
What does Eltek Data Loggers do?
Eltek designs, manufactures and sells wired and wireless environmental monitoring hardware (GenII UHF transmitters, SQ16Plus multi-channel loggers, SRV450 hubs, SMS450 alarms, AQ110/AQ112 air-quality monitors, repeaters, probes and sensors) alongside the Darca Command cloud software platform. The integrated Darca Solutions Suite provides continuous, gap-free monitoring of temperature, humidity, CO2, light/UV, particulates, differential pressure, water leaks and tilt for organisations in museums and heritage, life sciences, manufacturing/industrial and built environment applications.
Is Eltek Data Loggers a public or private company?
Eltek Data Loggers is a private company. It is classified as corporate owned and is currently operating.
When was Eltek Data Loggers founded?
Eltek Data Loggers was founded in 1985. It employs 1 to 10 people.
Where is Eltek Data Loggers based?
Eltek Data Loggers is headquartered in Cambridge, United States, in the North America region.
How does Eltek Data Loggers make money?
Four revenue lines are on record. Hardware Sales are the primary driver. The others are software Subscriptions, professional Services and calibration Services.
Who are Eltek Data Loggers's main competitors?
Direct peers on record are Vaisala, Rotronic (Process Sensing Technologies), Hanwell Solutions, Dickson (Dickson Data), Onset Computer Corporation (HOBO), Comet System (COMET), Sensitech (Carrier) and Lascar Electronics. testo (Testo SE & Co. KGaA) is listed as a broad incumbent. Cloudleaf / FourKites is listed as an emerging player.
Does Eltek Data Loggers have an API?
No public API is recorded for Eltek Data Loggers.
What industry is Eltek Data Loggers in?
Eltek Data Loggers's product category is Environmental Monitoring Systems. Its primary akta.pro industry code is TLAEALAI, Multi-sensor condition monitoring tags (temp+humidity+shock+location), with a secondary code of TLAEALAB, Humidity & dew point monitoring sensors. Its NAICS code is 334519 and its SIC code is 3829.