Some deliveries may take a little longer than usual due to regional shipping conditions.
DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
⚡ Stay powered, stay precise — the pro’s voltage sidekick!
The Klein Tools ET40 Digital AC/DC Voltage Tester delivers professional-grade accuracy and durability with a 12-240V AC and 1.5-24V DC testing range, bright LED indicators, and DC polarity detection. Built to endure 3-meter drops and equipped with double insulation and CATIII 250V safety rating, it’s engineered for reliable residential electrical diagnostics. Auto-off functionality extends battery life, making it an indispensable tool for millennial managers who demand precision and efficiency in their toolkit.
| 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 | #150,282 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #356 in Voltage Testers |
| Color | Orange |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,576) |
| Customer reviews | 4.5 4.5 out of 5 stars (1,576) |
| 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**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!
B**N
great quality
Trustpilot
1 month ago
2 months ago