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⚡ Test Smarter, Not Harder — Power Up Your Electrical Game!
The Klein Tools ET45 Voltage Tester is a compact, battery-free device designed for professional-grade AC/DC voltage testing from 24V to 330V. Featuring a built-in lead holder for tamper-resistant outlet testing, rugged drop resistance, and IP44 dust/water protection, it’s engineered for reliable, everyday use by electricians and DIY pros alike.












| ASIN | B07NZS6DGS |
| Best Sellers Rank | #79,844 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #182 in Voltage Testers |
| Brand | KLEIN TOOLS |
| Brand Name | KLEIN TOOLS |
| Color | Multi |
| Colour | Multi |
| Compatible Devices | Electrical circuits within the voltage range of 24V to 330V |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 1,609 Reviews |
| Global Trade Identification Number | 00092644691843 |
| Included Components | AC/DC Voltage Tester: Tester |
| Item Dimensions | 11.3 x 3 x 2.7 centimeters |
| Item Length | 4.45 Inches |
| Item Type Name | Voltage Tester, AC Voltage and DC Voltage Tester, No Batteries Needed |
| Item Weight | 1.8 Ounces |
| Item Width | 1.19 Inches |
| Item dimensions L x W x H | 11.3 x 3 x 2.7 centimeters |
| Item weight | 1.8 Ounces |
| Manufacturer | KLEIN TOOLS |
| Maximum Operating Voltage | 330 Volts |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 24 Volts (AC) |
| Model | ET40 |
| Part Number | ET45 |
| Power Source | Applied Voltage |
| Power source | Applied Voltage |
| Specification Met | CE |
| Style | 24/240 V |
| Style Name | 24/240 V |
| UPC | 092644691843 |
| Unit Count | 1 Count |
J**S
It is absolutely necessary and perfect.
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
works great
exactly what i need , fast easy and no batteries needed so i can leave it in the car in the winter
J**Z
Buenísimo.
¿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 handy
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 practico y de buena calidad
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 month ago
3 weeks ago