
Top rated Detectors
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1. Bosch Home & Garden Truvo
Bosch Truvo Cardboard Digital Locator. The Truvo detector is a simple solution for scanning walls and ceilings to locate metallic objects or live wires. This makes drilling safer when hanging pictures or installing lamps. An LED traffic light system and a warning signal indicate areas where drilling should be avoided. For added convenience, special LEDs with symbols for metal and live wires clearly show what the detector has found. A single on/off button and automatic calibration ensure that scanning tasks can be started immediately. A language-neutral quick start guide with simple graphics helps you use the tool correctly for more accurate results.
Pro
- Simple operation
- Easy to operate
- Easy handling
Contra
- No plastic box
- Too expensive
- No depth gauge display

2. Airthings Corentium Home
Small, portable, and powerful radon gas detector with integrated display - Gray
What is Corentium Home?
Corentium Home by Airthings provides everything you need to keep an eye on your radon levels at all times. Corentium Home is a device with the highest measurement accuracy and user-friendly operation. The device automatically adapts to its environment and eliminates inaccuracies caused by external factors.
Why is radon so dangerous?
Radon is one of the leading causes of lung cancer in non-smokers. Radon kills six times more people than residential fires and carbon monoxide poisoning combined. Radon is present everywhere, and radon concentrations vary from room to room and from day to day. That’s why continuous monitoring is so important. You will receive the first results of radon measurement after just 24 hours, without laboratory costs.
Application
The LCD display shows the average radon concentration for a day, a week, and a year. Optionally, you can create a report online from your measurement results. Corentium Home is lightweight and portable, making it easy to use in different rooms, floors, or buildings. However, Airthings always recommends long-term monitoring. Keep an eye on daily radon levels or medium- to long-term values. This way, you can feel safe at all times.
Benefits
- Within 24 hours, you will see the first measurement of your radon exposure.
- Portable - Small and battery-operated with a battery life of 2 years.
- Accurate - Measures values over a longer period, allowing for greater accuracy than traditional methods.
- Never pay laboratory costs again, saving you money!
Mobile or stationary detector for monitoring radon. Battery-operated: 3 AAA batteries included. Battery life up to 2 years. LCD display. Report can be created online. Dimensions: 12 x 6.9 x 2.5 cm. Weight: 148 g.
Pro
- Direct display
- Daily value and 7-day value
- Simple operation
Contra
- No possibility of transmitting the measured values
- Missing history

3. Bosch Professional GMS 120-27
Bosch Power Tools locating tool with bag GMS 120-27 (type: 0601081700)
Maximum search depth: 12 cm
Suitable for live working: yes
For searching wood: yes
For searching metal: yes
Maximum detection depth wood: 30 mm
Maximum detection depth metal: 120 mm
Maximum detection depth live wire: 50 mm
The GMS 120-27 Professional locating device makes it easy and intuitive to locate objects. The locating results are shown via a signal indicator on the display and the colour-coded marking hole. The user-friendly device offers simple operating mode selection and the marking hole allows you to mark exactly where objects have been located.
The robust GMS 120-27 was developed for harsh construction sites and is equipped with dust and splash water protection to IP54 and a shock-absorbing rubber housing. It helps to locate and localise metals, power lines and wooden beams in drywalls. Locating objects in walls before drilling ensures safe working, especially during renovation work when fitting cupboards, fitted kitchens, sinks, boilers and heating systems or installing air conditioning and sprinkler systems.
This locator not only determines the centre of the located object, but also indicates its material properties such as magnetic or non-magnetic metal, a live wire or non-metallic material.
Scope of delivery: Bag, 2 x 1.5 V LR6 battery (AA)
Pro
- Handy, simple operation
- Recognition is very good
- I have found my line
Contra
- Could be smaller
- Too expensive
- Maybe not for amateurs like me

4. Bosch Professional D-Tect 120
Bosch Professional Wallscanner D-tect 120, Area of application: Shower, Electrical engineering, House, Industry, Kitchen, Sanitary facilities, Functions: Non-contact measurement, Non-contact detection of alternating voltage, Detection of ferrous metals, Detection of electrical cables, Battery 4x1.5V-LR6. Detectable materials are water-filled plastic pipes, ferrous metals, non-ferrous metals, wooden substructures and live cables.
Pro
- Reliably detects metal and live wires
Contra
- The prices of these tools are all a little high
- Does not have to detect something
- Does not work

5. TFA PH-Check
The pH value is a measure of the acidic or basic character of an aqueous solution and refers to the concentration of hydrogen ions. The lower the pH value, the higher the acidity on a scale from 0 to 14. Pure water has a pH value of 7 and is considered neutral. Liquids with a pH value above 7 are bases or alkaline solutions. The pH value is particularly important for fish and plants in aquariums and ponds, for drinking and heating water, swimming pools, and in the production of food and cosmetics. With the digital pH meter PH CHECK, you can easily and reliably determine the pH value and the current temperature. The pH values of solutions are temperature-dependent. The integrated thermometer ensures automatic temperature compensation, providing particularly accurate results. By pressing the HOLD button, the current measurement values are retained and displayed permanently. Regular calibration ensures the functionality of the device and is easy to perform. The permanently attached glass probe is especially suitable for measuring in aggressive media. The pH meter is splash-proof according to IP65 and can be cleaned under running tap water or with distilled water after use. To prevent the electrode from drying out, it should always be stored in the supplied container filled with a special solution.

6. TFA PH Check
The pH value is a measure of the acidic or basic character of an aqueous solution and refers to the concentration of hydrogen ions. The lower the pH value, the higher the acidity on a scale of 0 to 14. Pure water has a pH value of 7 and is considered neutral. Liquids with a pH value above 7 are bases or alkaline solutions.
The pH value is particularly important for fish and plants in aquariums and ponds, for drinking and heating water, swimming pools, and in the production of food and cosmetics.
With the digital pH meter PH CHECK, you can easily and reliably determine the pH measurement and the current temperature. The pH values of solutions are temperature-dependent. The integrated thermometer provides automatic temperature compensation, resulting in particularly accurate results. By pressing the HOLD button, the current measurements are retained and displayed permanently. Regular calibration ensures the device's functionality and is easy to perform.
The pH meter is splash-proof according to IP65 and can be cleaned under running tap water or with distilled water after use. To prevent the electrode from drying out, it should always be stored in the supplied container filled with a special solution.

7. Bosch Professional D-Tect 200 C
Wall scanner D-tect 200 C. The D-tect 200 C Professional locates all common objects, presents them clearly, and allows for easy documentation. Equipped with Bosch radar technology and an improved user interface, it ensures safe and precise work on construction sites. Multiple views enable the selection of the best option for various applications, such as the spot view, which makes locating objects in hard-to-reach places particularly easy. For solid evidence, the innovative screenshot function of the wall scanner allows for quick documentation. The D-tect 200 C Professional is suitable for both indoor and outdoor work, protects against damage when drilling, and measures concrete cover. The wall scanner detects objects at depths of up to 20 cm and displays the depth of the object. Included in the package: bag, 4x 1.5 V-LR6 batteries (AA), battery adapter, USB-C cable, wrist strap.
Pro
- Detects various materials very reliably
- Simple, intuitive handling
- Easy to operate

8. Joy-it JT-RAD01
The JT-RAD01 radiation measuring device is used to detect gamma, beta and X-ray radiation and is characterised by its particularly easy handling, high measurement stability and its handy and robust design. It has a large, backlit LCD colour display. The measurement results can be displayed both as clear statistics and as a graphical evaluation.
Pro
- Very easy to use
- Display languages: D / E
- Good operating instructions
Contra
- Battery runs out quickly
- No upload of data to PC possible (USB only for charging)

9. Voltcraft AN-80 Anemometer 0.3 to 30 m/s
It can measure air velocity in m/s, volumetric flow rate, and air temperature, displaying these on the illuminated screen.

10. Voltcraft Pitot tube anemometer
The VPT-100 allows for the measurement of air or differential pressure, or with a Prandtl pitot tube, the volumetric flow rate and wind speed. These parameters are suitable for checking ventilation and air conditioning systems. The Prandtl pitot tube is a combination of a pitot tube and a static pressure probe, enabling the direct measurement of dynamic pressure.
