Calectro

What Calectro does

Calectro AB is a Swedish privately held technology company founded circa 1969–1974 and headquartered in Gothenburg (with operations referenced in Askim), Sweden. The company designs, manufactures, and sells sensor-based products and control systems for building automation, ventilation, fire safety, and indoor air quality management. Its portfolio spans duct and ceiling smoke detectors (Uniguard UG8 and UG-3 Superflow series), CO2/temperature/humidity regulators and transmitters (Calectro CR/CRT family), pressure transmitters, universal thermostats (CMT), frost alarms (CFA), rotary heat-exchanger controls (DRHX), and fire-door control units (KE-800), alongside accessories such as the PST195-R venturi tube and UB-6 detector base. Underlying technology includes NDIR infrared CO2 sensing with an ABC automatic self-calibration algorithm (15+ year maintenance-free operation), optical smoke detection with automatic sensitivity adjustment and service alarm, VdS- and UL-certified architectures, and a patent-pending 360-degree rotatable detector housing.\n\nThe business model is hardware-led: per-unit priced SKUs sold through a proprietary e-commerce storefront (shop.calectro.se) with same-day shipping on orders placed before 2 PM, supplemented by a global reseller network and OEM/custom-engineering engagements for buyers needing tailored sensor solutions. Customers are primarily professional building-automation installers, HVAC contractors, fire-safety integrators, and property managers; integrations with Modbus RTU, Modbus RS485, and LonWorks allow deployment inside larger building management estates. The company also operates the Calectro Cloud backend and the Calectro Assistant mobile app, providing IoT connectivity and remote configuration for installed devices.\n\nRevenue is generated through unit-priced hardware shipments, a standardized 5-year product warranty, and CE/VdS/UL compliance-driven specification sales. Distribution is concentrated in Europe with stated global reach via resellers, but no revenue split by geography or segment is disclosed and no enterprise customer logos are named in available materials.

Name

Calectro

Legal name

Calectro AB

Website

https://calectro.se

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

11–50 employees

Short description

Calectro AB is a Swedish manufacturer of sensors and control systems serving building automation, HVAC, and fire-safety professionals with smoke detectors, CO2/temperature/humidity regulators, and OEM-customized solutions sold via direct e-commerce and a global reseller network.

Ownership category

akta.pro rank

Headquarters

HQ city

Askim

HQ country

Sweden

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Sales: Sale of physical products including smoke detectors, CO2 sensors, temperature sensors, humidity sensors, pressure transmitters, control units, and accessories. Products are sold directly through e-commerce with pricing per unit.
2. OEM/ Custom Solutions: Custom-designed products for OEM customers based on specific customer requirements, providing tailored solutions beyond standard product offerings.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels9 records

Core offering

Calectro develops, manufactures, and sells high-precision sensors and control systems for building automation, with a core focus on smoke detection in ventilation ducts (Uniguard product family), CO2/temperature/humidity transmitters and regulators (Calectro CR/CRT product family), fire door control units, thermostats, frost alarms, and rotary heat exchanger controls. The company also offers OEM/custom-engineered solutions for partners requiring specialized products and supports its hardware with the Calectro Assistant app and Calectro Cloud services.

Product overview

Calectro is a Swedish technology company with over 50 years of experience in ventilation and building automation. The company offers a comprehensive portfolio of fire safety and ventilation products organized around the Uniguard smoke detection system family and Calectro CR environmental monitoring series. The core Uniguard line includes duct smoke detectors (UG8 series for new installations, UG-3 series for Superflow systems) and ceiling-mounted detectors (EVC-PY-DA), complemented by control units (ABAV-S3, KE-800) for system integration. The Calectro CR/CRT product family provides CO2, temperature, and humidity regulation for demand-controlled ventilation with wall and duct mounting options. Supporting product categories include heat exchanger controls (DRHX series), thermostats (CMT series), frost alarms (CFA series), accessories (venturi tubes, detector bases, mounting brackets), and cloud-connected services via Calectro Assistant and Calectro Cloud. The company emphasizes 5-year warranties, VdS certification for smoke detection products, and OEM/custom solutions.

Differentiator

Problem solved

Functional benefit

Brands

• Uniguard: Product line of smoke detectors for ventilation ducts, including UG8 series and UG-3 Superflow models.
• Calectro CR

Products and services

• Uniguard 8 (UG8-E-230 / UG8-E-24) VdS-approved optical smoke detector with built-in control unit for smoke detection in ventilation ducts. Features automatic sensitivity adjustment, service alarm, and rotatable detector housing. Includes PST195-R venturi tube for easy installation.
• UG8-O (Uniguard 8 Optical) Optical smoke detector with automatic sensitivity adjustment and service alarm, designed for connection to external control units. Rotatable in any direction for flexible installation.
• UG-3-O (Uniguard Superflow Optical) Optical smoke detector with automatic sensitivity adjustment and service alarm for duct mounting. Part of the Uniguard Superflow system with special adaptors for optimal airflow through the detector.
• EVC-PY-DA (Evolution Smoke Detector) Optical smoke detector for ceiling mounting with new mechanical optical chamber and light source. Automatically adjusts sensitivity for longer lifespan and fewer false alarms. Can replace ionizing smoke detectors.
• ABAV-S3 24V (Control Unit) Control unit for smoke detectors with relay contacts for controlling fire dampers and fans. Features smoke alarm, service alarm, and fault alarm relays. For 24V operation.
• CRC-A-MB-24 (VAV Regulator) VAV regulator measuring CO2, temperature, and humidity (%RH) for wall mounting. Features Modbus RTU communication, 15 preset selectable functions, automatic ABC self-calibration for CO2, and analog/PWM outputs.
• CRT-A-24 / CRT-D-A-24 (CO2 Transmitter) Temperature and CO2 transmitter for wall mounting with display. Features dual 0-10V analog outputs for CO2 (0-2000 ppm) and temperature (0-50°C). Uses NDIR infrared technology with automatic self-calibration.
• UG3-A-SENSE (Duct CO2/Temperature Transmitter) Microprocessor-based CO2 and temperature transmitter for duct installation. Features NDIR technology, automatic self-diagnostics, maintenance interval >5 years, 2 analog outputs, and optional Modbus RS485 or LonWorks.

Quantifiable outcome

• 15+ year expected lifespan for CO2 sensors without additional calibration
• +2 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

Feature7 records

Scale indicators3 records

Recent moves5 records

Expansion highlights6 records

Broad incumbents

• Siemens Smart Infrastructure: Siemens' Smart Infrastructure division offers building automation, HVAC controls, and fire safety products that overlap with multiple Calectro product families from sensors to smoke detection.
• Schneider Electric: Schneider Electric's building automation business offers HVAC controllers, VAV regulators, and environmental sensors that overlap directly with Calectro's regulator and transmitter ranges.
• Honeywell Building Technologies: Honeywell's Building Technologies segment covers HVAC controls, fire detection via System Sensor, and building management platforms that compete with Calectro across smoke detection, CO2 sensors, and ventilation controls.
• Bosch Building Technologies: Bosch's Building Technologies division offers fire alarm systems, smoke detection, and integrated building automation, overlapping with Calectro's duct-mounted detectors and building sensor categories.

Direct peers

• Distech Controls: Distech Controls produces building automation controllers, sensors, and VAV regulators with BACnet/Modbus integration, addressing the same HVAC and energy management buyer as Calectro's regulator portfolio.
• Mircom Group: Mircom designs and manufactures fire alarm and detection systems including duct smoke detectors, addressing the same HVAC contractor and fire-safety installer segment as Calectro's Uniguard offerings.
• Apollo Fire Detectors: Apollo Fire Detectors produces optical and ionization smoke detection products for commercial buildings, overlapping closely with Calectro's ceiling- and duct-mounted detector portfolio.
• Greystone Energy Systems: Greystone Energy Systems manufactures HVAC sensor and transmitter products including CO2, temperature, and humidity devices that directly compete with the Calectro CR and CRT series.
• System Sensor (Honeywell): System Sensor, a Honeywell brand, manufactures duct smoke detectors and notification appliances addressing the same HVAC contractor and fire-safety installer channel as Calectro's Uniguard line.
• Vaisala: Vaisala manufactures industrial-grade measurement instruments including CO2, humidity, and temperature sensors for HVAC and building applications, directly comparable to Calectro's CR and CRT product families.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCH03sWnrznudyQq962Bma_Q
• Facebookfacebook.com/calectroab
• LinkedInlinkedin.com/company/calectro
• Instagraminstagram.com/calectro1969
• Xx.com/calectro1969

Compliance8 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 Calectro