Klein Tools Multimeter Test Kit contains Cat. No. MM300 (Manual-Ranging Digital Multimeter), Cat. No. NCVT1P (Non-Contact Voltage Tester) and Cat. No. RT105 (Receptacle Tester). The MM300 measures DC current, AC/DC voltage and resistance. The NCVT1P automatically detects standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets, and wires. The RT105 detects the most common wiring problems in standard receptacles.