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⚡ Test Smarter, Work Safer — The Voltage Tester That Means Business
The Klein Tools ET40 Digital AC/DC Voltage Tester is a professional-grade tool designed for precise voltage measurement from 12 to 240 volts AC and 1.5 to 24 volts DC. Featuring bright LED indicators, DC polarity detection, and robust construction with double insulation and CATIII 250V safety rating, it’s built to endure drops up to 3 meters. Auto power-off extends battery life, making it an essential, reliable companion for electricians and savvy DIYers alike.
| ASIN | B07P45RB8S |
| ASIN | B07P45RB8S |
| Batteries | 2 AAA batteries required. (included) |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #127,495 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #300 in Voltage Testers |
| Color | Orange |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,568) |
| Customer reviews | 4.5 4.5 out of 5 stars (1,568) |
| Date First Available | 12 February 2019 |
| Date First Available | 12 February 2019 |
| Department | Unisex Adult |
| Display Style | Analog LED |
| Finish | Brushed |
| Included components | No|Tester, User Manual, and 2 x AAA Batteries |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 65.1 g |
| Item model number | ET40 |
| Item model number | ET40 |
| Manufacturer | KLEIN TOOLS |
| Manufacturer | KLEIN TOOLS |
| Material | Plastic Housing, PCB with Electronic Components |
| Measurement Accuracy | +/-0.5% |
| Part number | ET40 |
| Pattern | Solid |
| Power source type | Battery Powered |
| Product Dimensions | 13.31 x 3.86 x 2.82 cm; 65.2 g |
| Product Dimensions | 13.31 x 3.86 x 2.82 cm; 65.2 g |
| Shape | Rectangular |
| Size | One Size |
| Special Features | DC Polarity Indicators for DC Positive, DC Negative, and Both Illuminated for AC. Tests Low DC Voltage to 1.5V. Built in Test Lead Holders on Sides of Tester. |
| Specification met | CE |
| Style | 12/240 V |
| tech_spec_battery_description_toys | 2 x AAA |
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
R**G
This has been such an easy, accurate to and best for beginners!!
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!
J**N
Why did you choose this product over others?: Fantastic product, use everyday, like how it’s pocket sized, just wish it did a continuity audible beep Functionality: Great for proving dead on a circuit when you haven’t got your tool bag to hand Value for money: Very good product for the price
Trustpilot
2 weeks ago
2 months ago