What Detectortesters does

Detectortesters (legally No Climb Products Ltd.) is a UK-based designer and manufacturer of fire detector testing equipment, headquartered in Welham Green, Hertfordshire, and founded in 1965. The company operates five core proprietary brands — Solo (access poles and test kits for detectors at heights up to 9 metres), Testifire (multi-application detectors for smoke and heat), Testifire XTR2 (a connected multi-application tester for smoke, heat, and CO detectors), Scorpion (solutions for hard-to-access detectors), Trutest (sensitivity measurement), and SmokeSabre (hand-held smoke aerosol) — combined with the DT-connect mobile application and cloud portal for documenting and managing detector test results. Its products carry approvals from leading detector manufacturers and certifications including FIA, UL, Intertek, and UKAS, and the company has received a Queen's Award for Enterprise. Customers include fire safety professionals, building and facilities managers, and electrical contractors performing routine functional testing of fire detection systems in commercial, industrial, and residential settings.

The company's revenue model is anchored by one-time hardware sales of testers, kits, and accessories, distributed directly via its e-commerce storefront and through a global network of authorized distributors and resellers. A secondary recurring software layer has been introduced via the DT-connect app and portal, offered on a freemium basis with a rolling monthly Premium subscription for enhanced functionality, paired with connected hardware such as the Testifire XTR2 and XTR Pulse accessory. Go-to-market combines product-led tactics (free webinars, product training, access pole training, and DT Academy) with enterprise field sales to large organizations and government facilities requiring compliant testing solutions, supported by participation in industry events such as NFPA tradeshows.

Detectortesters is privately held and backed by Inflexion Private Equity Partners, operating as part of the Noventis Safety group. Since mid-2024 the company has pursued an active inorganic expansion strategy, acquiring US-based flow-testing equipment manufacturer The Hose Monster Company (Illinois) in May 2024 and Global Vision in March 2025, both for undisclosed consideration, establishing a US operational footprint and broadening its product set beyond detector testing into adjacent fire-protection flow testing. The company also operates a US presence following the Hose Monster acquisition and continues to release connected products, most recently the XTR Axis at NFPA 2026.

Name

Detectortesters

Legal name

No Climb Products Ltd.

Website

https://detectortesters.com

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

51–100 employees

Short description

Detectortesters (legally No Climb Products Ltd.) is a UK-based designer and manufacturer of fire detector testing equipment, serving fire safety professionals, building managers, and electrical contractors worldwide with proprietary hardware testers and a connected compliance software platform.

Ownership category

akta.pro rank

Product category

Fire Detector Testing Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Testing, Inspection, Maintenance & Compliance Services (NFPA/Local Code) (HSAHAFAG)

akta.pro secondary industry

Smoke & Carbon Monoxide Detector Testing/Replacement (HSAGAOAC)

Keywords

• Fire detector testing
• Smoke detector testers
• Fire safety equipment
• Heat detector testers
• Aspirating smoke detection

Headquarters

HQ city

Hatfield

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Sales: Primary revenue stream from selling detector testers, test kits, accessories, and access poles. Products include single application testers (smoke, heat, CO, sensitivity), multi-application testers, and bundled kits.
2. Connected Products Subscription: Freemium model for connected products (Testifire XTR2, DT-connect app/portal). Freemium services available free, Premium Services on rolling monthly subscription basis with enhanced functionality.
3. Premium Services Subscription: Rolling monthly subscription for enhanced functionality of the App and Portal including advanced features beyond Freemium tier.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Detectortesters designs, manufactures and sells specialist testing equipment for fire detection systems — including smoke, heat, CO and sensitivity tester instruments, multi-application testers, telescopic access poles, and related test kits and accessories — organised under the proprietary brands Solo, Testifire, Testifire XTR2, Scorpion, Trutest and SmokeSabre. Its flagship connected offering, the Testifire XTR2 paired with the DT-connect app and cloud portal, enables functional testing, digital documentation and compliance reporting for fire safety professionals, building managers, facilities managers and electrical contractors worldwide.

Product overview

Detectortesters is a designer and manufacturer of test solutions for fire detection systems, offering a portfolio of hardware products and connected software. The core product lineup includes five primary brands: Solo (access poles and test kits for height access), Testifire/Testifire XTR2 (multi-application testers for smoke and heat), Scorpion (solutions for hard-to-access detectors), Trutest (sensitivity testers), and SmokeSabre (smoke aerosols). The Testifire XTR2 represents their flagship connected product combining smoke, heat, and CO testing with digital reporting capabilities. DT Connect serves as the software platform providing mobile applications (DT-connect and DT-connect Pro) and a cloud portal for managing test reports and compliance documentation. Products are available in various kit configurations and with supporting accessories including XTR Pulse, batteries, generators, and detector removal tools. The company operates as part of the Noventis Safety group and was recently expanded through the acquisition of The Hose Monster Company (fire protection flow testing equipment) in 2024.

Differentiator

Problem solved

Functional benefit

Brands

• Solo: Brand offering test solutions for single and multi-sensor detectors, including access poles and test kits.
• Testifire
• Scorpion
• Trutest
• SmokeSabre
• XTR2
• DT Connect

Products and services

• Solo (access poles and test kits) A brand offering telescopic and extension access poles plus pre-configured Solo test kits that allow safe testing and maintenance of smoke, heat and CO detectors installed at heights up to 9 metres. Targeted at fire safety professionals, building managers and electrical contractors working at height or in elevated commercial and industrial settings.
• Testifire multi-application tester A multi-application detector tester that combines smoke and heat testing in a single all-in-one instrument for fire detection system verification. Designed for fire safety professionals and contractors who need to test both smoke and heat detectors across multiple detector brands during routine maintenance.
• Testifire XTR2 connected tester A connected multi-application tester that combines smoke, heat and CO detector testing in a single device, with digital connectivity enabling documentation, access and management of test results via the DT-connect app and cloud portal. Serves fire safety professionals and building managers who require an auditable, digital record of functional detector testing for compliance.
• SmokeSabre hand-held smoke aerosol A hand-held smoke aerosol with a unique design that prevents use too close to the detector, eliminating the risk of residue buildup on the detector. Used by fire safety professionals and technicians performing functional smoke detector testing.
• Scorpion hard-to-access detector solution A specialist solution for buildings with hard-to-access detectors that ensures all smoke detectors can be tested regardless of their location. Targeted at facilities where detectors are installed in difficult-to-reach positions beyond the reach of standard access poles.
• Trutest detector sensitivity tester A detector sensitivity tester that measures smoke detector sensitivity quickly, easily, accurately and professionally to verify proper operation. Used by fire safety professionals and contractors as part of preventative maintenance and compliance testing.
• DT Connect (App and Portal) A connected product ecosystem comprising the DT-connect mobile application and a cloud portal that enables users to document, manage and access fire detector test reports digitally, register connected products and manage technician access. Combines Freemium basic services with Premium Services on a rolling monthly subscription for enhanced functionality; used by fire safety professionals, building managers and facilities teams needing auditable compliance records.
• ASD Testing Solutions Specialist solutions for testing aspirating smoke detection (ASD) systems, addressing advanced fire detection requirements beyond conventional point detectors. Targeted at buildings and sites using very-early-warning aspirating smoke detection.
• Access Poles (Telescopic and Extension) Telescopic and extension access poles for reaching detectors installed at heights up to 9 metres, supporting safe testing and maintenance operations above ground level. Used by fire safety professionals and contractors working at height across commercial, industrial and residential buildings.
• Test Kits (Solo, Testifire, Urban, Trutest, XTR2) Pre-configured kits that bundle testers with the necessary accessories for specific testing scenarios, including Solo Kits, Testifire Kits, Urban Kits, Trutest Kit and XTR2 Kits. Designed to give technicians a complete toolset for the relevant detector testing application.
• XTR Pulse An accessory in the Testifire XTR2 ecosystem that enhances testing capabilities for fire detection systems. Targeted at technicians using the XTR2 connected tester who require additional functionality in the field.
• XTR Axis A new product launched at NFPA 2026 that expanded Detectortesters' product portfolio within the fire detection testing equipment market. Functions are positioned as a new offering alongside the existing Testifire, Solo, Scorpion, Trutest and SmokeSabre lines.

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• The Hose Monster CompanycoreOthersUS-based fire protection equipment manufacturer acquired by Detectortesters in May 2024. The acquisition aims to expand Hose Monster's global reach and enhance product capabilities, especially in digital solution development.
• Noventis Safety GroupcoreOthersDetectortesters is part of Noventis Safety group, a safety-focused portfolio of companies.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Honeywell International: Through its Notifier brand, Honeywell manufactures fire detection systems and offers proprietary testing/installation tools. As a multi-vendor testing equipment provider, Detectortesters competes against Honeywell's bundled solutions while serving the broader installed base that includes Honeywell detectors.
• Hochiki Corporation: Japanese fire detection equipment manufacturer with global distribution. Detectortesters' products are tested and approved for use on Hochiki detectors, positioning the company as a complementary testing supplier while Hochiki represents a potential source of bundled testing competition.
• Mircom Group of Companies: Canadian fire alarm and detection systems manufacturer offering integrated solutions. Mircom competes with Detectortesters indirectly by promoting proprietary testing tools to its installer network, while also representing a potential OEM partner for branded testing accessories.
• Edwards (Carrier Global): Carrier-owned fire detection and alarm systems brand with significant North American presence. Edwards' installer channel represents both an opportunity (third-party testing sales) and competitive risk (bundled testing solutions) for Detectortesters.
• Siemens Smart Infrastructure: Siemens' Building Technologies division offers integrated fire safety and detection systems globally. As a building systems incumbent, Siemens competes for the testing equipment budget within large commercial accounts that Detectortesters also serves.
• Cintas Corporation (Fire Protection): Cintas delivers outsourced fire protection services including extinguisher, sprinkler, and alarm inspections. As a vertically integrated inspection service provider, Cintas represents a channel partner opportunity and a potential long-term consolidator of compliance testing tools.

Emerging players

• Building Reports: Cloud-based inspection reporting platform for fire and life safety inspections. Building Reports overlaps with Detectortesters' DT Connect strategy by digitizing compliance documentation, making it a complementary or potentially competitive digital workflow partner.
• Inspect Point: Fire protection inspection management software targeting the same contractor customer base as Detectortesters. Both companies pursue the digitization of fire safety workflows, creating both partnership and platform-level competitive overlap.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/NoClimbProducts
• Facebookfacebook.com/detectortesters1
• LinkedInlinkedin.com/company/detector-testers-no-climb-products-

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A2 records

Investments

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

Frequently asked questions about Detectortesters