Gardner Bender TK-5HCN Home Electrical / Electrician Tester Kit Includes Digital MultiMeter (GDT-311), Non-Contact Voltage Tester (GVD-3504), GFCI Outlet Tester (GFI-3504), Dual Phone Line Tester (GTT-3200), & Replacement Test Leads (RTL-103), 4 Pc. Kit, Red & Black Digital Multimeter (GDT-311): Tests AC & DC Voltage, Resistance, Continuity, Temperature, Diodes and Batteries Circuit Alert Non-contact Voltage Tester (GVD-3504): Detects "live" AC voltage without touching bare conductors use to detect voltage in outlets, light fixtures, appliances, eletrical panels, or extension cords (GFCI Tester) Ground Fault Receptacle Tester & Circuit Analyzer (GFI-3501): Tests standard GCFI protected outlets for proper wiring Dual Telephone Line Tester (GTT-3200): Tests single and dual telephone lines for proper wiring Limited 1 Year Warranty