Electronic AC/DC Voltage TesterKlein 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:Tests AC voltages from 12V to 240V AC at four useful levels aligned with commonly used residential voltagesTests DC voltages from 1.5V to greater than 17 to 24V at four useful levels aligned with commonly used DC voltagesBright LEDs illuminate to indicate the type and level of voltage detectedBuilt to withstand a 9.9-Foot (3 m) dropIndicates polarity when measuring DC voltagesPowers off automatically after approximately 2 minutes of non-use to conserve battery lifeCATIII 250V, Class 2, Double insulationIngress protection IP41 dust and water resistantBuilt-in test lead holders on sides of testerLow battery indicator with easily accessible battery compartmentPocket clip secures tester to pocket for reliable everyday carryingUses 2 x AAA batteries (included)Identifies and distinguishes between AC or DC voltageWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.