Electronic Temperature Instruments

What Electronic Temperature Instruments does

Electronic Temperature Instruments (ETI) is a privately held, UK-based designer and manufacturer of digital temperature measurement instruments, headquartered in Worthing, West Sussex. Founded in 1992 and operating from its own UK manufacturing facility, ETI self-describes as the UK's largest manufacturer of digital thermometers and offers products in three interconnected categories: handheld probe thermometers anchored by the Thermapen line (notably Thermapen ONE) and the broader Therma series (Therma 1, 3, 20, 22, Elite), catering and HACCP-process instruments (Food Check, CaterTemp, Thermamite, ThermaCheck), and precision/industrial units (Precision PT100, Reference Calibration Thermometer). The portfolio uses thermocouple, thermistor, and PT100/RTD sensor technologies with an interchangeable probe architecture and accuracy down to ±0.03 °C on reference-grade devices. Polygiene BioMaster antimicrobial casings and EN 13485 certification support food-safety positioning, and a free SDK on request enables integration of Bluetooth (BLE 5.0) thermometers into third-party systems.

ETI monetizes through direct-to-consumer e-commerce at thermometer.co.uk (next-day UK delivery, international shipping to over 100 countries) and a distributor network serving enterprise customers, with hardware unit pricing broadly between £18 and £270 before VAT, plus a UKAS-accredited calibration laboratory generating recurring revenue from 3-point and 5-point calibration certificates and humidity calibration services. The go-to-market spans food services and catering as the primary vertical, with secondary positions in food processing, logistics/cold-chain, HVAC, legionella risk assessment, agriculture, laboratories, medical, and facilities management; software integration with ETI Cloud, ThermaData Hub (subscription-free HACCP platform launched in 2024), and the HACCP LE app extends into paperless compliance workflows. Revenue figures are not publicly disclosed, the company is family-run with no external investors or parent organization, and there is no record of funding rounds, acquisitions, or leadership changes in the input data.

Name

Electronic Temperature Instruments

Legal name

Electronic Temperature Instruments Ltd.

Website

https://thermometer.co.uk

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

101–250 employees

Short description

Electronic Temperature Instruments (ETI) is a privately held UK manufacturer of digital thermometers and temperature monitoring instruments, headquartered in Worthing. It serves food services, food processing, cold chain, HVAC, laboratories, medical, and facilities customers through direct e-commerce and a distributor network spanning 100+ countries.

Ownership category

akta.pro rank

Product category

Temperature Measurement Instruments

NAICS

Other Measuring and Controlling Device Manufacturing (334519), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Analytical Laboratory Instrument Manufacturing (334516)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Laboratory Analytical Instruments (3826), Electromedical & Electrotherapeutic Apparatus (3845)

akta.pro primary industry

Thermistors & Temperature Sensors (NTC/PTC/RTD Elements) (HDAHANAH)

akta.pro secondary industries

Thermometers & Temperature Monitoring (Smart Thermometers) (CRACAQAG), Cold storage facility environmental sensing (rooms, freezers, blast chillers) (TLAEALAL), Cold Storage Warehouse Temperature Monitoring (Refrigerated & Frozen) (AFAOALAC)

Keywords

• Digital thermometers
• Temperature measurement instruments
• Food safety thermometers
• Industrial probe thermometers
• Calibration services

Headquarters

HQ city

Worthing

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Thermometer and Temperature Instrument Sales: Sale of digital thermometers, probe thermometers, and temperature measurement instruments to food service, industrial, and consumer markets. Products include one-time purchase instruments with various price points from budget to professional calibration-grade equipment.
2. Probe and Accessory Sales: Sale of interchangeable probes including thermocouple, thermistor, RTD-PT100 probes, as well as accessories like protective covers, wall brackets, and carrying cases.
3. UKAS Calibration Services: Accredited calibration services providing UKAS 3-point and 5-point temperature calibration certificates for instruments and probes, with lead times of 5-14 working days.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Electronic Temperature Instruments (ETI) designs and hand-builds digital thermometers, infrared thermometers, data loggers, wireless temperature monitoring systems, and interchangeable probes (thermocouple, thermistor, RTD-PT100) at its Worthing, UK facility. The product range covers professional foodservice/HACCP instruments, industrial thermometers, HVAC, laboratory reference devices, and consumer home/garden thermometers. The company also operates an in-house UKAS-accredited calibration laboratory and offers subscription-free HACCP software (ThermaData Hub) and a Bluetooth mobile app for paperless compliance recording.

Product overview

Electronic Temperature Instruments (ETI) is the UK's largest manufacturer of digital thermometers, offering a comprehensive product portfolio centered on temperature measurement and monitoring solutions. The core offering spans handheld digital thermometers (Thermapen ONE, Therma series including Therma 1, Therma 3, Therma 20, Therma 22, Therma Elite), catering thermometers (Food Check, CaterTemp, Thermamite HACCP, ThermaCheck), and calibration/reference instruments (Precision PT100, Reference Calibration Thermometer). The ecosystem includes compatible probe families (Pro-Series, Thermocouple, Thermistor, RTD-PT100), wireless monitoring systems (RFX Wireless supporting 50 probes, WiFi Data Loggers), and Bluetooth-enabled smart thermometers (Therma T Blue, Therma 20 Blue, Therma 22 Blue) that integrate with the ThermaData Hub software platform for subscription-free HACCP compliance. ETI also provides UKAS-accredited calibration services, calibration certificates (3-point and 5-point), probe accessories, protective cases, and temperature monitoring kits including Legionnaires' testing kits. Products incorporate Polygiene BioMaster antimicrobial protection and comply with EN 13485 standards.

Differentiator

Problem solved

Functional benefit

Brands

• Thermapen: Premium instant-read digital thermometers for food professionals
• Therma Series
• ThermaData
• RFX Wireless
• ETI Cloud
• Thermamite
• CaterTemp

Products and services

• Thermapen ONE Professional instant-read digital thermometer with fast response time and high accuracy, widely trusted in food service and catering applications for HACCP temperature checks.
• Therma 22 Dual-sensor thermometer accepting both thermocouple and thermistor probes for versatile temperature measurement in catering applications.
• Therma 20 High-accuracy thermistor food thermometer with 0.1°C resolution, designed for catering and HACCP compliance with ±0.5°C system accuracy, certified to EN 13485.
• Food Check Digital hand-held thermometer designed for catering checks and HACCP food safety procedures with penetration probe.
• CaterTemp Professional digital probe thermometer with high system accuracy ±0.4°C for everyday catering temperature checks.
• Thermamite HACCP Simple one-button HACCP process thermometer with food penetration probe, free traceable calibration certificate, and Biomaster antimicrobial protection for daily food safety checks.
• ThermaCheck Thermistor thermometer with penetration probe providing high system accuracy ±0.3°C for catering and food processing.
• Therma T Blue Bluetooth-enabled high-accuracy type T thermocouple thermometer with 50m wireless range, BLE 5.0 technology, and 3000-hour battery life for paperless HACCP recordings.
• Therma 22 Blue Dual-sensor Bluetooth thermometer accepting both thermocouple and thermistor probes with BLE 5.0 connectivity for paperless HACCP compliance.
• Therma 20 Blue Wireless HACCP thermometer with Bluetooth connectivity, thermistor technology, and ±0.5°C system accuracy.
• Therma 3 Industrial digital thermometer with wide temperature range -100 to 1370°C and 1°C resolution for HVAC and building applications.
• Therma 1 Industrial digital thermometer with wide temperature range -100 to 1370°C, 0.1°C resolution, compatible with type K thermocouple probes.
• Therma Elite Rugged industrial thermometer with backlit LCD display, temperature range -99.9 to 1372°C, and calibration trim function.
• Reference Calibration Thermometer High-accuracy PT100 master thermometer with ±0.03°C system accuracy for calibration testing; includes 5-point UKAS Calibration Certificate.
• Precision PT100 Thermometer High-accuracy PT100/RTD thermometer with ±0.2°C accuracy over range -199.9 to 850°C, certified to EN 13485.
• RFX Wireless System Commercial wireless smart probe system supporting up to 50 probes, integrating with kitchen operations for HACCP compliance monitoring in restaurants, smokehouses, and catering operations.
• WiFi Temperature Data Loggers Wireless temperature monitoring devices enabling remote data collection via WiFi connectivity for compliance documentation and remote fridge/freezer monitoring.
• ThermaPod USB Logger USB temperature data logger storing up to 7,500 readings with no software download required for chilled food, pharmaceutical, and ambient room temperature monitoring.
• ThermaData Hub Software Subscription-free all-in-one digital platform that automates temperature data collection from ETI WiFi loggers, USB data loggers, and Bluetooth thermometers for HACCP compliance.
• ETI Cloud Cloud-based platform for ETI WiFi temperature monitoring and data management solutions.
• HACCP LE App Free mobile app for recording temperature measurements and HACCP compliance data using ETI Bluetooth thermometers.
• Legionnaires' Standard Legionella Thermometer Kit Complete Legionella water testing kit including Therma 1 thermometer, waterproof surface probe, heavy-duty PTFE wire probe, zip pouch, and free traceable calibration certificate for HSE compliance.
• UKAS Calibration Services UKAS-accredited calibration laboratory providing 3-point and 5-point temperature and humidity calibration certificates for instruments and probes, with 5-14 working day lead times.
• Pro-Series High Temperature Penetration Probe 305mm Stainless steel reduced-tip penetration probe, Ø3.5 x 305mm, -50 to 300°C range, response time less than 4 seconds, for continuous oven and vat monitoring with DOT, ChefAlarm, and Smoke thermometers.
• Heavy Duty Wire Probe PFA insulated wire temperature probe with rapid response time under 1 second, temperature range -75 to 250°C, for fridge and freezer applications.
• Waterproof Surface Temperature Probe Waterproof ribbon surface probe with fast response under 1 second, temperature range -75 to 250°C, for pipe and tank measurements.
• Digital Max/Min Thermometer Digital thermometer displaying actual, maximum, and minimum temperatures with 0.1°C resolution, designed for home, office, or garden applications.
• Wall-Mounted Thermometer Hygrometer Wall-mounted digital thermometer and hygrometer with large display showing temperature and humidity for room condition monitoring.

Quantifiable outcome

• Temperature range from -199.99°C to 1372°C depending on instrument and probe combination
• +3 more outcomes

Segments9 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature6 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• ThermoWorks: US-based manufacturer of professional and consumer food thermometers (including the ThermoPro and Thermapen-style instant-read products) targeting the same chefs, caterers, and home cooks as ETI's Thermapen and CaterTemp lines.
• Cooper-Atkins: US temperature monitoring specialist with a broad food-service, HVAC and healthcare portfolio (handhelds, wireless probes, HACCP software) that directly overlaps ETI's RFX Wireless, Bluetooth, and CaterTemp offerings.
• Comark Instruments: UK-based temperature and humidity measurement company serving food service, industrial, and HVAC customers with handhelds and data loggers that compete head-to-head with ETI's Therma series.
• Lascar Electronics: UK-based designer and manufacturer of standalone data loggers (temperature, humidity, voltage), overlapping with ETI's ThermaData WiFi loggers and USB temperature data loggers for cold chain and facility monitoring.
• Berlinger & Co. Swiss specialist in temperature monitoring for pharmaceuticals and cold-chain logistics, providing Q-tag and Fridge-tag loggers that overlap ETI's ThermaData loggers and ThermaPod USB logger for pharma and food transport use cases.

Broad incumbents

• Testo: German-headquartered global leader in portable measurement technology (temperature, humidity, flue gas, HVAC), with deep food-safety and HACCP solutions that overlap ETI's food service and HVAC verticals at a much larger scale.
• Vaisala: Finnish global provider of industrial, meteorological, and life-science measurement instruments including temperature and humidity probes, loggers, and continuous monitoring systems that overlap with ETI's higher-accuracy reference and laboratory range.
• Fluke Corporation: US-headquartered test and measurement giant whose process calibration and HVAC instruments (including Fluke Calibration/Hart Scientific) compete for ETI's Reference Calibration Thermometer and industrial Therma 3/Elite buyers.
• Sensitech: US-based global cold-chain visibility provider (TempTale, ColdStream) offering cellular IoT sensors and analytics for life sciences and food logistics, competing with ETI's WiFi/Bluetooth wireless monitoring line for large enterprise accounts.
• Hanna Instruments: Global manufacturer of bench and portable measurement instruments including thermometers, pH meters, and environmental probes, overlapping ETI's laboratory and industrial thermometer segments with a much broader measurement portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/etiltd
• YouTubeyoutube.com/@etithermometer
• Facebookfacebook.com/etiltd
• LinkedInlinkedin.com/company/eti-ltd
• Instagraminstagram.com/etiltd

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Electronic Temperature Instruments