Over 70 years of experience
Testboy's clever innovations always have one goal: the highest possible product safety combined with maximum user-friendliness.
Our
product categories
Continuity testers
Acoustic and visual continuity testing for fast troubleshooting in cables, devices and installations.
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Voltage testers
Compact testers for fast, safe voltage checks at home, in the workshop and in industry.
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Magnetic field testers
Non-contact testing of solenoid valves and electromagnetic fields – ideal for service and maintenance.
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Two-pole voltage testers
Standards-compliant voltage testing according to DIN EN 61243-3 – the standard tool of every qualified electrician.
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Multimeters
Versatile digital multimeters for precise measurements in electrical installation, service and industry.
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Clamp meters
Measure current without breaking the circuit – digital clamp meters for professional use.
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Socket testers
Testavit Schuki: check sockets and RCDs safely and in compliance with standards in seconds.
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Cable locators & network testers
Locate cables, test networks, find fuses – the trackers for installation and troubleshooting.
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Adapters & phase rotation testers
Determine the phase rotation at CEE sockets and motors quickly and reliably.
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Installation testers & appliance testers
Standards-compliant testing according to VDE 0100-600 and DGUV V3 – documented safety for installations and appliances.
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Thermometers
Measure temperatures without contact using infrared or conventionally with a probe – quickly and precisely.
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Lux meters & distance meters
Measure illuminance in compliance with standards and determine distances by laser – for professionals.
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Work lights
Robust LED work lights with powerful batteries for optimum visibility wherever you work.
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Mould detectors, moisture meters & anemometers
Detect mould, measure moisture, check air flow – for a healthy indoor climate.
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Automotive test instruments
Specialised test and measuring instruments for batteries, on-board electrical systems and vehicle troubleshooting.
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E-mobility & Renewable Energy
Test wall boxes, PV modules and heating circuits – measuring technology for the energy transition.
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Thermography
Thermal imaging and inspection cameras make temperature differences and hidden defects visible.
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Our catalogue
Discover our complete range of test and measuring instruments in the current Testboy catalogue – browse it conveniently online or download it as a PDF (in German).
Testboy test and measuring instruments in reliable professional quality
To keep meeting the expectations of our demanding customers, we are constantly developing our product range in line with the applicable standards and legislation.
In addition to safety and quality, we attach particular importance to cleverly combining as many useful functions as possible in a single instrument.
News and updates
Testboy at gedatec 2026 in Berlin
From 13 to 15 October 2026 we will be at gedatec – the trade fair for building technology incl. belektro – in Berlin. Visit us in Hall 2.2, Booth 228.
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Testboy at GET Nord 2026 in Hamburg
From 19 to 21 November 2026 we will be at GET Nord – the trade fair for electrical, plumbing, heating and air conditioning – in Hamburg. Visit us in Hall B5, Booth 145.
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New: Testboy Pocket Work Light
The new Testboy Pocket Work Light is rechargeable, offers two light colours and can be attached by magnet or tripod.
Read moreNew: Testboy TV 288 – mobile endoscope camera
The Testboy TV 288 mobile endoscope camera records photos and videos in HD and saves them to a microSD card.
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New: Testboy TV 456 – installation tester according to DIN VDE 0100-600
The battery-powered Testboy TV 456 installation tester is an all-in-one instrument covering the tests according to DIN VDE 0100-600 – including RCD testing for EV charging stations.
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We will be happy to advise you.
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