Features: Single-Head electric Tester: A Small and hand tool designs for detecting electric in electrical circuits with ease. electric Detection Pen: This simple yet effective device features a single pointed head that allows for accurate testing of live cord without direct contact. not -Contact electric Tester: Equipped with a single probes , this tester alerts users to the existence of electric through visual or hearable sign. Electricity Testing Tool: The single-head design provide convenience and Precisions when identifying energizes circuits or faulty wiring. Pocket-Sized electric Test Pen: This easy carry tester is ideal for electricians and DIY enthusiasts, making it easy to carry and use for quick electric checking. Specifications: Color: clear Material: plastic+metal Length: 135mm(5.31in) Measuring ranges: 100-500V Package Includes: 1xVoltage Detectors note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.