Safe Operation--Non-contact detection for your safety, this detector can automatically distinguish null line and live line, you can see it clearly in the display area. A low-battery indicator displays when the battery is low to make sure you get work done on time.
Portable to Use--Suitable for indoor and outdoor electrical work. It's small enough to work in your pocket. Also great for household electrical work and small enough for you to store. Easy to use it for identifying the correct breaker, replacing switches and outlets and adding a GFCI.