Klein Tools - For Professionals Since 1857

Electronic AC/DC Voltage Tester

ET40

  • Tests AC voltages from 12V to 240V AC at four useful levels aligned with commonly used residential voltages
  • Tests DC voltages from 1.5V to greater than 17 to 24V at four useful levels aligned with commonly used DC voltages
  • Bright LEDs illuminate to indicate the type and level of voltage detected
  • Built to withstand a 9.9-Foot (3 m) drop
  • Indicates polarity when measuring DC voltages
  • Powers off automatically after approximately 2 minutes of non-use to conserve battery life
  • CATIII 250V, Class 2, Double insulation
  • Ingress protection IP41 dust and water resistant
  • Built-in test lead holders on sides of tester
  • Low battery indicator with easily accessible battery compartment
  • Pocket clip secures tester to pocket for reliable everyday carrying
  • Uses 2 x AAA batteries (included)
  • Identifies and distinguishes between AC or DC voltage
Images
JPG (High Resolution) et40_photo.jpg
PNG (Transparent Background) et40.png
Interactive Catalog

Klein Tools ET40 is an Electronic AC/DC Voltage Tester. It features indicators for positive and negative DC polarity, and tests DC voltages as low as 1.5V. It tests AC voltages 12-240VAC. Excellent for checking, verifying or troubleshooting common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. It operates on 2 x AAA batteries.

Specifications
Application:
Measures AC/DC voltage
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.
Material:
Plastic Housing, PCB with Electronic Components
Batteries:
2 x AAA
Drop Protection:
9.9' (3.0 m)
Display:
Analog LED
Control Type:
ON/Off Switch for Power ON/OFF
Voltage:
AC Level Indicators: 12V, 24V 120V, 240V and DC Indicators:1.5V, 9V, 12V, >17-24V
Frequency:
50/60 Hz
Ingress Protection:
IP41
Pollution Degree:
2
Tests Continuity:
No
Integral Lead Storage:
Yes
Interchangeable Leads:
No
Lead Length:
9'' (228.6 mm)
Standard:
CATIII 250V, CE
Case Included:
No
Included:
Tester, User Manual, and 2 x AAA Batteries
Overall Length:
5.24'' (133.0 mm)
Overall Height:
1.52'' (39.0 mm)
Overall Width:
1.11'' (28.0 mm)
Weight:
2.3 oz (66g)
UPC:
092644691836
Additional Information
Warnings
  • Read, understand, and follow all instructions, cautions and warnings attached to and/or packed with all test and measurement devices before each use.
  • Before each use, verify tester operation by measuring a known voltage.
  • Never use the tester on a circuit with voltages that exceed the category based rating of this tester
  • Always adhere to local and national safety codes. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
  • Usage of this tester in any way other than that specified by the manufacturer can impair safe operation, resulting in severe injury or death.