Klein Tools ET45 is an Electronic Voltage Tester. Designed as a simple, easy to use tester to check, verify or troubleshoot common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. This tester does not require batteries, and features a pocket clip for convenient carrying.

WARNING

• 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.
• Never use the tester on a circuit with voltages that exceed the category based rating of this tester.
• Usage of this tester in any way other than that specified by the manufacturer can impair safe operation, resulting in severe injury or death.