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.

• Features
• Voltage Tester for 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 9.8-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
• 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.
• 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.

• Specifications
• Drop Protection : 9.8' (3 m)
• Ingress Protection : IP41
• Display : Analog LED
• Included : Tester, User Manual, Batteries
• Pollution Degree : 2
• Integral Lead Storage : Yes
• Batteries : 2 x AAA
• Control Type : ON/Off Switch for Power ON/OFF
• Overall Width : 1.11" (2.8 cm)
• Overall Height : 1.52" (3.9 cm)
• Weight : 2.3 oz (66 g)
• Application : Measures AC/DC voltage
• Standard : CATIII 250V, CE
• Case Included : No
• Material : Plastic Housing, PCB with Electronic Components
• Overall Length : 5.24" (13.3 cm)
• Lead Length : 9" (22.9 cm)
• Frequency : 50/60 Hz
• Voltage : AC Level Indicators - 12V, 24V, 120V, 240V and DC Indicators -1.5V, 9V, 12V, >17-24V
• Tests Continuity : No
• Interchangeable Leads : No
• Accuracy : Approximately 70 to 100% of Indicated Voltage, Except for 2V DC (84 to 100%) and >17V DC (94 to 100% of 17V)
• Accessories : 5139C, 5139PAD
• Item Height : 1.1100 in
• Item Width : 1.5200 in
• Item Depth : 5.2400 in
• Item Weight : 0.2680 lbs