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The Klein Tools ET40 Digital AC/DC Voltage Tester offers professional-grade accuracy and durability with a wide voltage range (12-240V AC, 1.5-24V DC), bright LED indicators, and DC polarity detection. Designed for residential and light commercial use, it features drop resistance, double insulation, and smart auto-off to maximize battery life, making it an essential tool for millennial managers who demand precision and reliability in their electrical diagnostics.






| Manufacturer | KLEIN TOOLS |
| Part number | ET40 |
| Item Weight | 65.1 g |
| Product Dimensions | 13.31 x 3.86 x 2.82 cm; 65.2 g |
| Batteries | 2 AAA batteries required. (included) |
| Item model number | ET40 |
| Size | One Size |
| Color | Orange |
| Style | 12/240 V |
| Finish | Brushed |
| Material | Plastic Housing, PCB with Electronic Components |
| Pattern | Solid |
| Shape | Rectangular |
| Power source type | Battery Powered |
| Item Package Quantity | 1 |
| Measurement Accuracy | +/-0.5% |
| Display Style | Analog LED |
| Specification met | CE |
| 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. |
| Included components | No|Tester, User Manual, and 2 x AAA Batteries |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| tech_spec_battery_description_toys | 2 x AAA |
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