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⚡ Test Smarter, Work Safer — Klein Tools ET45 Has Your Voltage Covered!
The Klein Tools ET45 Digital Voltage Tester offers professional-grade AC/DC voltage testing from 12-240V AC and 32-330V DC with bright LED indicators for clear readings. Battery-free operation powered directly by voltage ensures uninterrupted use, while its rugged IP44 rating and CATIII 350V safety certification provide reliable protection on any jobsite. Compact and durable, it’s engineered for precision, convenience, and safety in electrical troubleshooting and inspections.












| ASIN | B07NZS6DGS |
| Best Sellers Rank | #34,591 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Voltage Testers |
| Brand Name | KLEIN TOOLS |
| Color | Orange |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,670) |
| Global Trade Identification Number | 00092644691843 |
| Included Components | Tester |
| Item Dimensions | 4.45 x 1.19 x 1.05 inches |
| Item Type Name | Klein Tools ET45 Voltage Tester, AC Voltage and DC Voltage Tester, Low Voltage Tester Does Not Need Batteries |
| Item Weight | 1.8 Ounces |
| Manufacturer | Klein Tools |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 24 Volts (AC) |
| Model | ET40 |
| Power Source | Voltage-powered |
| Specification Met | CE |
| Style Name | 24/240 V |
| UPC | 092644691843 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year manufacturer |
L**G
A nice alternative to multimeter
Sometimes you don't want to bring out the multimeter just to test the voltage. This is a good alternative.
B**N
Works great
great quality
S**Y
Highly practical for both professionals and DIYers — I would definitely buy it again! ⚡🛠️
⭐️⭐️⭐️⭐️⭐️ The Klein Tools ET45 Digital AC/DC Voltage Tester is accurate, easy to use, and excellent value for money. It provides reliable readings every time, and the design is straightforward and user-friendly. Highly practical for both professionals and DIYers — I would definitely buy it again! ⚡🛠️
C**G
Klein Tools ET45 Digital AC/DC Voltage Tester basic tool for the money.
Klein Tools ET45 Digital AC/DC Voltage Tester for both AC/DC & Polarity test, Auto Off, CATIII 350V-Class 2-Double Insulation, IP44 Dust & Water Resistant, No Batteries Needed. Range - 12-240 vac , 32-330V DC, LED Illumination. If you have it available when needed it is a good field tester.
C**H
.
Nice item. Thank you.
R**T
Excelente equipo cómo herramienta y muy útil
W**.
cheap and works great
Its cheap and works. Others complain that the probes aren't long enough. There are plastic covers on them, take them off and then probes are long enough.
R**N
Save yourself the Shock!
How many times ahve you been working on a DIY project and wondered is the power on or off? Oh well, let me get to work! and Whammy you got the shock! We've all been there and this will save you, literally and never hurts to be safe! These is SUPER easy to use and while basic, it's a small form factor that is straightforard and simple to operate and a time and shock saver!
J**S
This voltage tester was a must have for me. I feel more at ease putting my trust in this product than I do a voltage pen, therefore since I lost my previous tester I purchased this affordable one. Absolutely perfect for checking safe isolation and betteries. Very please with this handy pocket tester.
S**D
exactly what i need , fast easy and no batteries needed so i can leave it in the car in the winter
J**Z
¿Quieres saber si hay voltaje el tu circuito? Este es el probador indicado. Tienes las tres "B", bueno, bonito y barato.
R**N
Small and compact, can easily have in a pocket or small pouch. And the addition of no batteries required means less maintenance, the low price also makes it very affordable to replace should it became damaged or faulty. However I doubt the latter as klein is know for quality tools.
G**.
Muy bien! Solo que los cables están muy cortos para medir y en las características menciona que no hay modo de reparación por alguna eventualidad. Es decir que son desechables. Pero aún así son de buena calidad!
Trustpilot
1 week ago
2 months ago