About This

Accurate Voltage and Leakage Detection – Quickly test socket wiring with precise measurements of AC voltage and leakage voltage, ensuring accurate and reliable results every time.
GFCI Test for Enhanced Safety – Built-in GFCI testing feature helps detect faulty ground circuits to prevent electrical hazards and improve home and workplace safety.
Clear Wiring Status Indication – The LCD screen displays 8 types of wiring statuses with clear indicators for correct, incorrect, missing, or reversed wiring, helping you diagnose and troubleshoot wiring issues effectively.
User-Friendly Operation – Compact design and simple plug-and-play functionality allow both professionals and homeowners to use the device with ease, no technical expertise required.
Durable and Portable Design – The ZT-E4 is made from high-quality, durable materials and features a lightweight, portable design, perfect for electricians and DIYers.
Versatile plug tester for electrical outlets - This advanced plug tester for electrical outlets allows you to quickly and accurately detect voltage and leakage, enhancing safety with built-in GFCI tester functionality. With its digital circuit breaker finder feature, this tool is essential for diagnosing electrical outlet issues in homes and workplaces, making it perfect for electricians and DIY enthusiasts alike.
Easy-to-use electrical outlet tester and circuit breaker finder - Designed with simplicity and efficiency in mind, this electrical outlet tester and circuit breaker finder provides clear indications of wiring status, helping you troubleshoot common wiring problems effortlessly. The compact design and relay tester capabilities make it suitable for both professionals and homeowners looking to ensure electrical safety without any technical expertise.
Portable and high-precision circuit tracer and spark plug tester - Equipped with features such as circuit tracer and spark plug tester, this durable tool covers a wide range of testing needs, including locating faulty circuit breaker finder circuits. The clear LCD display shows comprehensive wiring statuses, ensuring accuracy for any GFCI tester or plug testing task. Ideal for both quick checks and thorough diagnostics, it’s a must-have for anyone working with electrical outlets.