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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 residential voltage testing from 12 to 240V AC and 1.5 to 24V DC. Featuring bright LED indicators for voltage level and polarity, rugged drop resistance, and CATIII 250V safety rating, it combines durability with smart energy-saving auto-off functionality. Compact and battery-powered, it’s engineered for electricians and managers who demand accuracy, safety, and efficiency on every job.
| ASIN | B07P45RB8S |
| Best Sellers Rank | #66,405 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #139 in Voltage Testers |
| Brand | KLEIN TOOLS |
| Brand Name | KLEIN TOOLS |
| Color | Orange |
| Colour | Orange |
| Customer Reviews | 4.5 out of 5 stars 1,645 Reviews |
| Global Trade Identification Number | 00092644691836 |
| Included Components | No|Tester, User Manual, and 2 x AAA Batteries |
| Item Dimensions | 13.3 x 3.9 x 2.8 centimeters |
| Item Length | 5.24 Inches |
| Item Type Name | Klein Tools ET40 Voltage Tester, AC Voltage, DC Voltage, and DC Polarity, Low Voltage Tester Includes Batteries |
| Item Weight | 2.3 Ounces |
| Item Width | 1.11 Inches |
| Item dimensions L x W x H | 13.3 x 3.9 x 2.8 centimeters |
| Item weight | 2.3 Ounces |
| Manufacturer | KLEIN TOOLS |
| Maximum Operating Voltage | 240 Volts |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 1.5 Volts |
| Model | ET40 |
| Number of Items | 1 |
| Part Number | ET40 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Specification Met | CE |
| Style | 12/240 V |
| Style Name | 12/240 V |
| UPC | 092644691836 |
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.
R**0
Good Klein quality
Good voltage safety tool.
R**J
beau produit
lecteur facile d'utilisation et très bien fait
A**.
Quick Check Tool
Great tool for checking voltage. Bought it for the toolbox in the bed of my pickup. I didn't buy a full blown multimetrer because they need batteries. It'll sit in the tool box for many months till I need it and the batteries would be dead or leaking with my luck. I use it to check voltage in the field or when I'm not home in my workshop. Probes are the right length, caps come off if you need more length to check a tamper resistant outlet. Basically foolproof. Lights up with the correct voltage on a scale. Be sure to test on a known live outlet before each use.
J**Z
Buenísimo.
¿Quieres saber si hay voltaje el tu circuito? Este es el probador indicado. Tienes las tres "B", bueno, bonito y barato.
Trustpilot
1 month ago
2 weeks ago