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Best Testers - Holidays Sale

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Last Updated - 15.12.2025

Best Choice

01

Mr.Twinklelight

Mr.Twinklelight Breathalyser Police Accurate, Professional Breathalyser with 30 Mouthpieces, Portable Alcohol Tester with Digital LCD Screen for Private Professional Use at Home

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Professional alcohol tester: Our alcohol tester is equipped with a high-precision semiconductor sensor to ensure accurate and reliable alcohol measurement. It can quickly provide a result to judge whether you can drive or not.
Portable alcohol tester: This professional alcohol knife device takes up little space and can be easily taken in your handbag or bag. The alcohol tester comes with 30 individual mouthpieces. They can be cleaned and recycled, which is good for hygiene.
Fast and accurate: Accuracy: 0.01% BAC (0.1 g/l), with advanced semiconductor sensors to ensure accurate display in a short time. For more accurate results, please test 3 times in a row and take the average value.
Easy to use: simply press and hold the start button, wait 10 seconds to warm up, blow for 3-5 seconds and your BAC results will be displayed 3 seconds later on a bright, easy-to-read LCD screen. (Without 2 AAA batteries)
Automatic alarm function: this alcohol meter has an alcohol measurement range of 0.00-0.19% BAC (0.0-1.9 g/l). If the test result is higher than 0.05% BAC or 0.5g/L, the tester will sound an alarm. The alcohol tester automatically turns off 10 seconds after completing the test to save energy.

15,99 €
02

Mr.Twinklelight

PH Meter, PH Value Meter, PH Meter with LCD Display, PH Tester Portable for Water, Pool, Aquarium, Drinking Water, pH Meter, High Accuracy, 0.00-14.00 Measuring Range (Bronze)

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide application: the pH meter is versatile and is ideal for checking water quality at home, laboratory, food analysis, cosmetics, aquaculture and swimming pool maintenance.
PORTABLE AND EASY TO USE: You just need to remove the protective cover and dip the pH meter into the solution. Its value stabilises within a few seconds and can be calibrated by pressing the button on the pH meter. Turns off automatically after a few minutes of inactivity. Thanks to its compact size and light weight, it is also ideal for mobile use.
Complete pH meter set: the kit contains everything you need for an accurate pH measurement: a yellow pH meter, a transparent storage case, three calibration powders and an instruction manual (English language not guaranteed).
Calibration: PH value meter has an automatic calibration function that can be adjusted depending on the water temperature and quality. When testing, you only need to wait a few seconds to get the pH value, practical for our daily life or experiments.
Automatic temperature compensation: the pH value test pen can work at a standard measurement temperature of 25°. If the solution temperature varies, it is automatically compensated to minimize errors and improve accuracy.

13,98 €
Value for Money

03

AstroAI

AstroAI Digital Multimeter with Ohm, Volt, Ampere, Voltage Tester, Measures AC/DC Voltage, DC Current, Resistance, Diode, Continuity Measuring Instrument with Backlight

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28% Off
9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile digital multimeter: Accurately measures AC/DC voltage, DC current, resistors and diodes. This multimeter is a very useful tool for solving electrical problems in industrial and household areas. It is suitable for household sockets, fuses, batteries (even vehicles) as well as for troubleshooting car circuits and charging systems, testing electronics in the car, etc.
User-friendly: includes a data hold function, a low battery indicator and an acoustic continuity tester. Convenience features such as the backlit LCD display, which simplifies use in low light conditions, complete the package. Package includes: battery/test lead set/user manual.
Troubleshooting with precision: This multimeter has a sampling rate of 2 measurements per second, a 0.6 inch backlit LCD display with 3 ½ digits (max. value range 1999) and a high polarity including negative and positive readings.
Guaranteed safety: the double ceramic fuse has a fire retardant effect and protects against overload. The silicone case protects the multimeter from fall damage and prevents electric shock. It also shows when the battery power is low.
Additional tips: This multimeter is designed to safely and accurately diagnose a variety of electrical problems in the car and household sector. It is therefore ideal for professionals or DIY enthusiasts who want to make improvements or repairs in the household or trade. (NOTE: This meter cannot test AC current; make sure you have chosen the correct setting on the multimeter before measuring.

9,97 € 13,99 €(28% Off off)
04

PROXXON

Proxxon Voltage Tester VDE 0680, Blade 0.5 x 3.0 mm 22390

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9.0

Excellent

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Main highlights

Tested piece by piece at 2,000V. Nickel-plated blade 0.5 x 3.0 continuously hardened.
Spring steel clip for front pocket. Blade length 60mm. Total length 140mm.
Proxxon 22390 Voltage tester as per VDE 0680
Of highstrength ABS, with roughened, non-slip surface.
Indication of voltage between phases 220 to 250V, 50/60Hz (up to 500Hz).

4,25 €
05

VENLAB

Non-Contact Voltage Tester Small with Buzzer, AC Current Tester Line Detector with Torch, Cable Break Detector Pen Continuity Tester for Socket Control Cabinet 12/48 V ~ 1000 V

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25% Off
8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Multi-tool for electricians: a multi-detector with torch for construction site and home with batteries. You can also call it socket tester cable detector.
Line detector for phase and zero conductor detection: neutral conductor - yellow light; phase conductor - red light
Electric test pen with acoustic and visual signal: If at the measuring point of the AC voltage, the integrated LED flashes yellow/red and a buzzer sounds.
Contactless voltage tester: the single-pole AC voltage detector VD200 allows voltage testing without contact from 48 V to 1000 V (normal mode) or 12 V to 1000 V (sensitive mode)
Cable interruption test pin: move the NCV sensor slowly along the AC line, the red light flashes. An interruption point is nearby when the yellow light flashes.

8,99 € 11,99 €(25% Off off)
06

BMUT

25 x 16-in-1 Drinking Water Test Strips - Water Tester for Tap Water Quality Analysis Total Hardness Lead Copper Nitrate

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

[Quick Release Bag] 25 x Test Strips - 16 Parameters with a Test Strip - 16-in-1
[Clear] In German and English. The test strips are just as long as the colour scale on the label. This allows for easy and quick reading. The recommended readings are integrated into the colour scale using bars.
[Check your drinking water] Either directly from the tap or after filter. Alternatively use for pool/swimming pool
[BMUT quality] Highest demands
[16 parameters] Total hardness, free chlorine, iron, copper, lead, nitrates, nitrites, potassium monopersulphate, total chlorine, fluoride, cyanuric acid, ammonium chloride, bromine, total alkalinity, carbonates, pH

9,89 €
07

AKIELO

AKIELO + Digital Battery Tester with LCD Display - Universal Battery Tester & Precise Battery Tester for Household - For AAA, AA, C, D, 9V & 1.5V Button Cells

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26% Off
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Universal battery test: compatible with 9 V and 1.5 V batteries, including AA, AAA, C, D and button cells. The AKIELO+ digital battery tester with LCD display reliably checks the charge status of all standard household batteries - no more blind battery changes, but fast, accurate results with a universal battery tester.
Robust and easy to use: made of durable ABS plastic with non-slip handle and thoughtful top-loading design - this digital battery tester is compact, precise and made for everyday use. The digital display delivers more reliable results than flickering analogue indicators - a battery meter that won't let you down.
No internal power required - NEVER | This battery tester does not require its own power - it uses the battery to be tested for power supply. No buttons, no charging, no internal batteries. Simply remove from the drawer and get started right away - a battery tester for all the batteries you depend on daily.
Finding errors quickly - device or battery? | A single low battery can paralyze an entire device. This battery tester instantly detects the weak cell - so you know if the device is defective or just the battery needs to be replaced. Saves time, money and reduces unnecessary waste.
18-stage status display in seconds: the sliding test arm design effortlessly adapts to different battery sizes and allows one-handed testing. The colour-coded 18-level digital display shows at a glance whether your battery is full, low or empty - quickly and clearly understandable.

5,49 € 7,49 €(26% Off off)
08

One+Step

10 x Ultra Sensitive Pregnancy Test - Early Tests

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16% Off
8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ultra early test to detect pregnancy from the 6th day after conception.
Test strip width approx. 4 mm – For comparable offers, please note the specification of the test strip width, if this is missing, you tend to receive cheap tests with a 2.5 mm strip width, which makes for inaccurate reading of the test result.
Neutral packaging.
Each test is individually sterile packed.
10 Pregnancy Tests 10 miu/ml - Pregnancy Tests for Early detection of pregnancy before menstruation is due.

4,15 € 4,95 €(16% Off off)
09

Ansmann

Ansmann Battery Tester Battery Tester for Batteries Button Cell black

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37% Off
8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With the most accurate results, the tester is the reliable all-rounder among battery testers for almost all batteries. Suitable for e.g. AAA, AA, C, D, 9V, CR123A, CR2, CR-V3, 2CR5, etc.
The diagnosis of the battery tester is always absolutely accurate and reliable - so empty batteries can be easily sorted out. Surprisingly empty batteries are no longer a problem
Quick testing: On a bar scale divided into three areas (weak normal good), the current state of the battery of the batteries or button cell is displayed
Easy to use: measuring is very easy by pressing on the intended place or after inserting into the matching slot. Large LCD display for easy reading of the values
Box contents: 1 x LCD battery tester, 1 x micro AAA battery / handy and user-friendly battery and battery tester for measuring the capacity of round cells 9 V blocks as well as button cells (all batteries)

9,99 € 15,99 €(37% Off off)
10

CHERRY

CHERRY MX EXPERIENCE BOX, 10 Mechanical Keyboard Switches for DIY, Hot Swap or Gaming Keyboard, to Try and Get to Know You, Quality Made in Germany

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8.1

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Unique quality "Made in Germany": original CHERRY MX switches, developed and manufactured in Germany - for an incomparable writing experience and a high degree of precision
Order without worries: switches sit securely in the box, which prevents the contact pins from bending during shipping. Another plus: pure cardboard packaging for reduced waste quantity
Large selection: MX Black, MX Black Clear Top, MX Blue, MX Brown, MX Ergo Clear, MX Green, MX Grey, MX Red, MX Silent Red, MX Speed Silver – each switch is included 1 x
Durable and reliable: CHERRY gold crospoint contacts (insensitive to dust and dirt), min. 50 million actuations per switch without sacrificing quality, permanently safe switching performance
10 of our most popular CHERRY MX switches to try and get to know: Test yourself according to your mood through the different variants and find your favourite MX switch

9,99 €