Introducing a quick, easy, and safe way to detect voltage in your home. We are happy toer you the ELECTRIC SENSOR PEN. It has LED LIGHT and BEEPING TECHNIQUE to IDENTIFY and ALERT CONVENIENTLY and SAFELY the USER, It has an INSULATED PROBE TIP that EFFECTIVELY ELIMINATES the RISK of CONTACTING LIVE ELECTRICAL WIRES. Electric Sensor Pen is BATTERY OPERATED making it EASIER and MORE CONVENIENT to TEST ANYWHERE. It is GUARANTEED ACCURATE. It is LIGHTWEIGHT and COMPACT making it EASY to FIT into any POCKET or TOOL BELT, It is very EASY to USE, and it is REUSABLE and can LAST a LONG TIME.