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. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857. VERSATILE MULTIMETER Measures up to 600V ACDC voltage, 10A DC current, and 2MOhms resistance CONTINUITY TESTING MM300 multimeter with visual and audible indicators for testing continuity NONCONTACT VOLTAGE TESTER NCVT1P with bright LED indicating working status, changing to red and producing audible tones when voltage is detected HIGHINTENSITY VOLTAGE DETECTION NCVT1P with bright red LED and audible tone for detecting voltage in the range of 50 to 1000 VAC RELIABLE RECEPTACLE TESTER Kleins Cat. No. RT105 detects wiring configurations, indicates correct wiring, and identifies common wiring faults COMPREHENSIVE FAULT DETECTION Identifies open ground, open hot, open neutral, and hotground reversed; does not indicate other complex wiring issues INCLUDED ACCESSORIES Test leads included for Cat. No. MM300 and batteries included for Cat. Nos. NCVT1P and MM300