This 2 in 1 digital voltages tester screwdriver combines direct current & alternating current detection, live / neutral wire identification, and battery polarity checking with not voltages sensing for comprehensive electrical diagnostics Featuring a steel shaft with tip and triple alerts ( LCD display, color coded LED, and buzzer), it ensures good and instantly visual / auditory feedbacks during voltages measurements Ideal for both DIYer homeowners handling household repairs and professional electricians requiring circuit testing tools for daily electrical maintenance tasks Perfect for safely troubleshooting outlets, verifying wire continuity in appliances, or performing quick voltages checks during automotive battery inspections without direct Compact at 175mm length and 57g weight, its ergonomic design with insulated grip provides portable convenience for tool boxes storage while meeting electrical standards, Manufacturer: RGYBAO